Just a heads up for next time....tepid to warm water for the soaks....if the water feels really cool to the touch, its probably wayyy too cold for the bp to sit in.

Anyways, if the skin doesn't come off after a few soaks and gentle rubbing, just make sure the humidity in the enclosure is where is should be and it should come off next time, no big deal. The only real trouble spot for retained sheds are the eyecaps and the tail. I both of those spots are good, I wouldn't worry about it too much.