Well, I'd go get a small rubbermaid shoebox, put about 1/8" of water...very little, don't want to drown him! Put a couple holes in the lid, and put the lid on....let him soak for quite a while. Then you can try to work the shed off by hand slowly. Try to start around the "lip" and use a fingernail to get it started. Make sure also to check the water temp. with a thermometer of some sort. Warm water to your hand is too hot to the snake. No real exact temp. on the water for you, I'd say around 78-80 degrees. It sounds like he is dehyrdrated. Is this Dumerils tongue flicking? The last dumerils I knew of in this condition, did not tongue flick. When you'd open the mouth, you'd find the tongue lying alongside the glotus. He also was almost always dehyrdrated. This was one I purchased in a hurry, and had to assist feed...oops! After that, I've never used the round containers, but you can find what I use in a few threads below, and also a few other good set ups from other keepers/breeders. Man, I wish you the best of luck, have you contacted the breeder/dealer? Possibly he can offer you some assistance or would be willing to help you out in some other way that only he can offer being the breeder/dealer of the animal. Good luck, take care
Paul