Soak the snake for 30 minutes in no more than 2 inches of 85 degree water and then replenish it and repeat soak for another 30 minutes.
You can place a hand towel in the water if you're worried about the snake.
You need to allow the process to work, the stuck shed tends to slide right off after the 60 minute humid bath.
I've yet to have a stuck shed not come off using this simple method.