I have seen this before on a rescue I took in a few years back and from memory it came out fine post shed. The snake in question was kept in too high a humidity ( almost marshy conditions ) when I got her and I simply treated it as a Ball in shed and all worked out ok.

I did'nt raise or lower humidity other than normal for a shed, and it came out ok afterwards, although to be fair that indent looks very prominent.

I always raise humidity higher than normal when they are in shed so I would think if you also do that it would be enough.

Maybe others have had more incidents like this and can offer alternative solutions, that is the only one I can recall from my experience and it sorted itself out post shed.