Board Thread:Skyrim/@comment-141.134.80.190-20150220221428/@comment-6881629-20150405164410

A Deathlord wedged me between a urn and wall once with Unrelenting Force it was pretty annoying. Brother Verulus probably isn't physically stuck though, it's his ai thats stuck keeping him in place attacking them can sometimes fix it (so same solution really). Although npc's (mainly just Serana) can get occasionally trapped in tiny gaps in the floor.

He can also apparently not move if you don't finish the first half of the quest (Investigate the Hall of the Dead) before asking him to follow you.