I have tried leaving the quest by fast traveling somewhere else but if I leave I have no inventory and cannot open inventory or use spells. The game still thinks that I am in the quest.
Prior to this quest I had noticed that NPC's would not react to me talking to them (try renting a room and they say ok but no money is exchanged and they don't actually give me a room) and when killing dragons, no souls are captured.
Please help as the game is completely unplayable unless I start over and get to the same point again, obviously not an option.