Lol. Yeah, I got it after I re-read it. I was trying to figure out how his snake digested in 10 min. Light Bulb!
That's a tough one though. Let the snake digest, or clean him. It would probably be better to clean. Ugh. It would get nasty sitting in there for 2 days. I had a hatchling flip her hide over once, I just let her be. I didn't want to get bit, and she was still in feed mode.
I wouldn't worry about substrate though. As long as they can get it down, they shouldn't have any trouble digesting it. They can digest bones. That's why it's better to use paper/paper towles.