I picked up the Totems of Hircine quest, which forces you to keep Aela the Huntress as your follower throughout. I left it in my quest log for a while and did some other stuff, including curing myself of being a werewolf. Later when I went to do the Totems quest, I found I couldn't get into the Underforge (the door just doesn't show up as a usable object when I aim at it).
So now I can't complete the quest and I'm stuck with Aela as a follower (she doesn't have a dismissal dialogue option, and she cannot die). She also doesn't take orders or carry stuff and she gets in the way a lot, so I'd really like to get rid of her. Anyone know how I can fix this?