A stuck shed can be taken off very easily with a humid soak.

Sterilite tub
1 1/2 to 2 inches of 85 to 88 degree water measured with your thermometer probe.
A towel or hand towel or t-shirt in the water, it helps keep the snake from swimming.
soak 30 minutes and see how easily the shed slides off.
If not so easy then drain water and replenish and soak the snake for another 30 minutes.
By then it will all be off or come off very easily.

Soaking a snake in a closed tub does not stress it out, I've used this method many times back in the day when I had stuck sheds or received snakes with stuck sheds.