Board Thread:Skyrim/@comment-118.208.90.5-20140304063530/@comment-6881629-20150207131010

If your on PC you can teleport him out like 68.49 said otherwise (and this is a longshot) if you can get him close to the exit (push him and or Fus him) get him to talk to you and quicky go through the exit while he's still talking.