I left the dungeon last night after the thm pulled mobs and attacked them. Not to sleep, but to kill. I was playing my level 26 glad at the time. He then yelled at me for not being able to maintain aggro. 15 minute penalty is Nothing compaired to going through an entire dungeon with this kind of player. I entered the dungeon after the 15 minutes was up and found friendly helpful people and had a great time.

Moral of the story is: dont be an idiot unless you like tanking in that fine cloth armor.