Don't revert anything that isn't hand-related. I think the weird stuff like this comes from either conflicting morphs/too many morphs on one area or an unsupported morph like something from Genesis 3.
I would find anything you think is affecting the hands and go one by one, reducing it by a little and see if it fixes the problem. If not, set it back to what you had and go to the next. Any full body morphs should be looked at as well -- anything with a character name "Jane body" or "... scale", "... height", "... length"
If you have to reset the hands, there should be some other morph that will reduce the hand size. I think I have a few that scale hands.