ATB won't shed, causing problems.

[biteme]

I've had snakes have bad sheds but they always start it. This ones not even trying. Which normally wouldn't concern me, he'll shed when he's ready.. except his skin is abnormally wrinkled and yesterday I noticed his mouth starting to gape a little.. which concerns me.

I've never seen this happen, but I've never worked with ATBs before.. Obviously I've raised his humidity as much as I can (misting pretty frequently in addition to the mistking he normally has) and tonight I put him in a container with a soaked cloth for awhile. I hesitate to leave him overnight like I would some of my other snakes since he gets stressed a lot easier..

Behavior wise he's fine. Acts normal, curious, active.

Anything I should do?