He's just fine. He gets like that when we skip a few bath times, right after he's eaten and curled up for a few days, right before a shed, and when he gets into tight places he doesnt realise he cant fit. It's kind of like the fold in peoples stomachs when they bend over, and with the lower humidity of winter they kind of stay bent like that. A few good soaks and a shed usually take care of it just fine, at least untill he does something to bend them again.