What are your temps and humidity? Usual culprit with a bad shed is too low of humidity, you want to keep it around 60% and then up it to 75% during shed. As for getting rid of what is left on. Take a towel and soak it in warm water, wring it out so the towel is damp not soaked, and place it and the snake in a small tupperware. Place the closed tupperware into the snakes normal enclosure and in an hour or so you will have a snake with no old shed left on. Improve your humidity though before the next shed so you dont' have to go through this again.
-----
Nita Hamilton
4.13 Normal BP's, 1.0 Het Orange Ghost BP, 1.0 Het Pied 1.0 50% poss Het Orange Ghost BP's