I figured out how to get the king to get out of his room and give me access to the vault but now I need the key. A walkthrough says where to find it, but I cant enter the room where it is located now because one of the goblins blocks the doorway and wont move. I have tried repeatedly to move up and back down the levels to try and reload his position as he wasnt there until recently, but he wont move. Any help? Im play on Xbox btw.

I ended having to load a much earlier save. Characters move based on what quests are activated and I had talked to the little girl in town not knowing this would move the goblin in front of the door and that I still needed in that room. I could have killed the goblin but I didnt want to do that.