How to fix the Skyrim: Waking Nightmare quest glitch on the Xbox360?

I have started the quest by speaking to Erandur. I followed him all the way up to the Temple where these 2 Ice floating things started attacking us. I died twice doing this and had to start all over. So my third time walking up to the temple I let Erandur kill all the Ice floating things. Once we did that he told me something and went into the temple. I followed him inside the temple, and realized that he wasnt on the otherside. I searched the room for 20minutes thinking there was a lever I needed to pull but there was nothing. I left the temple 2-3 times and went back in and he never appeared. I then looked at my map and realized that he was already at the end of the temple. I looked this up online and soon found out that it was a glitch. People seemed to resolved the problem on PC, but there was no video or anything on how to fix this glitch for the Xbox360 (or possibly the PS3 if they are having the same glitch that I do). I tried going back to my last save, but since I entered the temple multiple times before finding out it was a glitch tht my AUTO save wont go back, and my previous saves have me at lvl 12, when I am lvl 21 right now. I wldnt wont to go back that far just to get this quest reseted. Is there anyway to fix this quest?