This morning I got to observe Glyph shed. It took all of about 15 minutes, and went very well I'm happy to report, in one piece.

As soon as he was down to his vent, he pooped/peed. I'm wondering if, during any period building up to the shed the old skin coming off constricts the vent, thus rendering snakes unable to do their thing.

Maybe that's why some don't eat before.