I had a similar problem
http://www.ball-pythons.net/forums/s...ad.php?t=38037


But last night I took a wet pillow case placed it in a small sterilite container (18 qt) placed it half over a heating pad and half off...let it get warm in there and put my snake in it over night. The vet said I could leave him soaking in the water tub or a pillow case over night but I was worried about him getting to cold because the pillow case reached 70 degrees right have I rung out the water.
So it was nice and toasty in there and in was in it all night going in and out of the pillow case, and he even pooped in there lol . But yes I woke up this morning and his shed was off...thank god!