diff --git a/src/applications/conpherence/controller/ConpherenceParticipantController.php b/src/applications/conpherence/controller/ConpherenceParticipantController.php
--- a/src/applications/conpherence/controller/ConpherenceParticipantController.php
+++ b/src/applications/conpherence/controller/ConpherenceParticipantController.php
@@ -17,7 +17,7 @@
     $conpherence = id(new ConpherenceThreadQuery())
       ->setViewer($viewer)
       ->withIDs(array($conpherence_id))
-      ->needWidgetData(true)
+      ->needParticipants(true)
       ->executeOne();
 
     if (!$conpherence) {
diff --git a/src/applications/conpherence/controller/ConpherenceUpdateController.php b/src/applications/conpherence/controller/ConpherenceUpdateController.php
--- a/src/applications/conpherence/controller/ConpherenceUpdateController.php
+++ b/src/applications/conpherence/controller/ConpherenceUpdateController.php
@@ -597,7 +597,7 @@
       ->setAfterTransactionID($latest_transaction_id)
       ->needCropPics(true)
       ->needParticipantCache($need_participant_cache)
-      ->needWidgetData($need_widget_data)
+      ->needParticipants(true)
       ->needTransactions($need_transactions)
       ->withIDs(array($conpherence_id))
       ->executeOne();
diff --git a/src/applications/conpherence/query/ConpherenceThreadQuery.php b/src/applications/conpherence/query/ConpherenceThreadQuery.php
--- a/src/applications/conpherence/query/ConpherenceThreadQuery.php
+++ b/src/applications/conpherence/query/ConpherenceThreadQuery.php
@@ -9,7 +9,6 @@
   private $ids;
   private $participantPHIDs;
   private $needParticipants;
-  private $needWidgetData;
   private $needCropPics;
   private $needOrigPics;
   private $needTransactions;
@@ -35,11 +34,6 @@
     return $this;
   }
 
-  public function needWidgetData($need_widget_data) {
-    $this->needWidgetData = $need_widget_data;
-    return $this;
-  }
-
   public function needCropPics($need) {
     $this->needCropPics = $need;
     return $this;
@@ -116,18 +110,15 @@
       if ($this->needParticipantCache) {
         $this->loadCoreHandles($conpherences, 'getRecentParticipantPHIDs');
       }
-      if ($this->needWidgetData || $this->needParticipants) {
+      if ($this->needParticipants) {
         $this->loadCoreHandles($conpherences, 'getParticipantPHIDs');
       }
       if ($this->needTransactions) {
         $this->loadTransactionsAndHandles($conpherences);
       }
-      if ($this->needFilePHIDs || $this->needWidgetData) {
+      if ($this->needFilePHIDs) {
         $this->loadFilePHIDs($conpherences);
       }
-      if ($this->needWidgetData) {
-        $this->loadWidgetData($conpherences);
-      }
       if ($this->needOrigPics || $this->needCropPics) {
         $this->initImages($conpherences);
       }
@@ -297,101 +288,6 @@
     return $this;
   }
 
-  private function loadWidgetData(array $conpherences) {
-    $participant_phids = array();
-    $file_phids = array();
-    foreach ($conpherences as $conpherence) {
-      $participant_phids[] = array_keys($conpherence->getParticipants());
-      $file_phids[] = $conpherence->getFilePHIDs();
-    }
-    $participant_phids = array_mergev($participant_phids);
-    $file_phids = array_mergev($file_phids);
-
-    $epochs = CalendarTimeUtil::getCalendarEventEpochs(
-      $this->getViewer());
-    $start_epoch = $epochs['start_epoch'];
-    $end_epoch = $epochs['end_epoch'];
-
-    $events = array();
-    if ($participant_phids) {
-      // TODO: All of this Calendar code is probably extra-broken, but none
-      // of it is currently reachable in the UI.
-      $events = id(new PhabricatorCalendarEventQuery())
-        ->setViewer($this->getViewer())
-        ->withInvitedPHIDs($participant_phids)
-        ->withIsCancelled(false)
-        ->withDateRange($start_epoch, $end_epoch)
-        ->execute();
-      $events = mpull($events, null, 'getPHID');
-    }
-
-    $invitees = array();
-    foreach ($events as $event_phid => $event) {
-      foreach ($event->getInvitees() as $invitee) {
-        $invitees[$invitee->getInviteePHID()][$event_phid] = true;
-      }
-    }
-
-    // attached files
-    $files = array();
-    $file_author_phids = array();
-    $authors = array();
-    if ($file_phids) {
-      $files = id(new PhabricatorFileQuery())
-        ->setViewer($this->getViewer())
-        ->withPHIDs($file_phids)
-        ->execute();
-      $files = mpull($files, null, 'getPHID');
-      $file_author_phids = mpull($files, 'getAuthorPHID', 'getPHID');
-      $authors = id(new PhabricatorHandleQuery())
-        ->setViewer($this->getViewer())
-        ->withPHIDs($file_author_phids)
-        ->execute();
-      $authors = mpull($authors, null, 'getPHID');
-    }
-
-    foreach ($conpherences as $phid => $conpherence) {
-      $participant_phids = array_keys($conpherence->getParticipants());
-      $widget_data = array();
-
-      $event_phids = array();
-      $participant_invites = array_select_keys($invitees, $participant_phids);
-      foreach ($participant_invites as $invite_set) {
-        $event_phids += $invite_set;
-      }
-      $thread_events = array_select_keys($events, array_keys($event_phids));
-      $thread_events = msort($thread_events, 'getDateFrom');
-      $widget_data['events'] = $thread_events;
-
-      $conpherence_files = array();
-      $files_authors = array();
-      foreach ($conpherence->getFilePHIDs() as $curr_phid) {
-        $curr_file = idx($files, $curr_phid);
-        if (!$curr_file) {
-          // this file was deleted or user doesn't have permission to see it
-          // this is generally weird
-          continue;
-        }
-        $conpherence_files[$curr_phid] = $curr_file;
-        // some files don't have authors so be careful
-        $current_author = null;
-        $current_author_phid = idx($file_author_phids, $curr_phid);
-        if ($current_author_phid) {
-          $current_author = $authors[$current_author_phid];
-        }
-        $files_authors[$curr_phid] = $current_author;
-      }
-      $widget_data += array(
-        'files' => $conpherence_files,
-        'files_authors' => $files_authors,
-      );
-
-      $conpherence->attachWidgetData($widget_data);
-    }
-
-    return $this;
-  }
-
   private function loadOrigPics(array $conpherences) {
     return $this->loadPics(
       $conpherences,
diff --git a/src/applications/conpherence/storage/ConpherenceThread.php b/src/applications/conpherence/storage/ConpherenceThread.php
--- a/src/applications/conpherence/storage/ConpherenceThread.php
+++ b/src/applications/conpherence/storage/ConpherenceThread.php
@@ -21,7 +21,6 @@
   private $transactions = self::ATTACHABLE;
   private $handles = self::ATTACHABLE;
   private $filePHIDs = self::ATTACHABLE;
-  private $widgetData = self::ATTACHABLE;
   private $images = self::ATTACHABLE;
 
   public static function initializeNewRoom(PhabricatorUser $sender) {
@@ -167,14 +166,6 @@
     return $this->assertAttached($this->filePHIDs);
   }
 
-  public function attachWidgetData(array $widget_data) {
-    $this->widgetData = $widget_data;
-    return $this;
-  }
-  public function getWidgetData() {
-    return $this->assertAttached($this->widgetData);
-  }
-
   public function loadImageURI($size) {
     $file = $this->getImage($size);