That's it- those pictures on the other thread closely resemble what one of my snake's is doing. I'm going to go and put it in the tub for now, but it's been out of water now and in aspen for a couple of days since it showed itself, so I think an attempt to hydrate it is probably in vain.

btw- come to think of it, I don't know for sure if it's a female. I'll check.