I played skyrim for a while now, finished the game and everything, but one day when I was playing skyrim I got into a cave for a quest, when I tried leaving it won't let me, it would just spawn me back to the door to exit. I tried disabling all of my mods but it didn't work, all of my mods are up to date. I tried going into another save but it would just spawn me into the river wood inn where delphine hidden room is for a weird reason and won't let me leave it. HELP ME.

I have made a video about it: http://www.youtube.com/watch?v=kvNbO8zPqV0