I think their skin is more sensitive right after shed. I have noticed this with my snake also. And balls or any snake probably don't like when you mess or especially grab their neck. That massage might feel like your getting ready to grab it by the neck. That will cause a jerking back movement, they are protecting their head area.
Having it wet in an enclosure is not really a good thing IMO. Even during shed time. That is the problem with foggers. IMO you might be asking for trouble by
having one. But we'll see i guess.
I don't think many people have foggers on here but I could be wrong, that would be a good thread question for you to ask. In the husbandry section.