Well, I'm not expert enough to go declaring it "just" a bad shed. But my girl's second shed after we had her got stuck because I hadn't done a good enough job of adjusting her enclosure for the drier winter air. I knew she was in shed and knew her humidity had been a little low so I thought I might need to help with a soak or something. Then one day I looked into her enclosure and I thought she was dying! She looked horrid! I also might have been an overreactive new keeper! But a soak did the trick and it all came off.

With this BP, you know there has been more than just a low humidity. Being on your doorstep (possibly overnight) in cold weather couldn't have been good! But BPs have survived things like that. This link has a story about a snake that was "stiff and ice cold" that survived. http://www.ralphdavisreptiles.com/co...all_python.asp

One thing I'd look for is how is the snake acting? Do you know enough about BPs to know if it is acting normally?

Also the description of fluid filled lumps does not match "just a bad shed", as I said before. At least not the bad shed my snake had. Air trapped between layers of skin MIGHT move around the way you are describing, but it seems to me if there was air under there, then the snake shouldn't be having trouble getting it off.

I really don't know. In most cases if I suspected a bad shed I'd recommend try a soak and see if the snake sheds and fixes the problem. But this poor snake might have much more going on and I'm not qualified to make any recommendations in this situation. I hope some of our more expert people see this thread soon!