This pretty much pisses me off, so...
The quest is now bugged, at least for me.
I get to Molag Bal. He pulls me up then drops me, without the break free animation.
I either die from falling damage, or nearly die. Either way it is the same result.
Molag Bal just stands there doing nothing. He never engages.
Since he never engages, I can not defeat him and move on.
Oh wait! I can't get to Vet Level.
And before people try to offer solutions.. NO, none of them work so don't even reply.
I've waste enough soul gems dying while running back and while there.