Ok it's not raw underneath. It seems to be drying up and "breaking away" today. I guess I'll monitor it for the next few days. It scared me lol I've never had one have this happen.
Snakes do it tidily all in one go. Humans do it in tiny bits that become house dust. Tortoises do it in patches and look downright tatty at times. It's unusual for such a big piece to come loose in one go, but it's the second we have seen on TFO in the last few days strangely