First 2 times i lured Brother Verulus to that cave and let the cannibals kill him so i could eat his flesh. But with my third character i did the same, but before they had a chance to kill him, i killed all of the cannibals and saved Brother Verulus. Did you saved Brother Verulus?
In case you don't know who i'm talking about:
http://images.uesp.net/thumb/3/3e/SR-npc-Brother_Verulus.jpg/600px-SR-npc-Brother_Verulus.jpg
http://www.uesp.net/wiki/Skyrim:Brother_Verulus