I agree with "Stryder"......From what you say, and from what I've experienced in many years myself.......when a snake feels even a LITTLE limp, this is not a good sign at all, and it could be on it's way out!!,.....I would make a "BEE-LINE" to a reptile vet PRONTO!!!. It could be any number of things, by the time you get done guessing and doing needless things, it could be TOO LATE!!!!!. One thing I would do NOW is bring the temp. up to around 83-86 degrees or so, this will at least help a little till you get him to a vet.........hope it does well!! ....Doug
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Better to be silent and thought a fool, than to open mouth and remove any doubt!