are you sure it is fuzzy head you see bulging under the throat? agree with DV pcs would be helpful, but I would just leave him be, DO NOT stress him out, open his mouth, etc, nothing you can do now, but to leave him alone to digest. MAKE SURE the conditions are good, he seems awfully dry in the pics and watch him if he starts bloating, or anything else is happening. do not feed him now for a a few days and offer nightcrawlers from now on with occasional mouse ( no more then one a month)