Good call on having a "professional" try and take care of him.
There was a young (not that young) squirrel in our yard last year that was either very retarded (seriously) or very sick. He just didn't "move right" and wouldn't climb a tree. We tried to scare it up a tree several times...he would just hug the bark and jump like an uncoordinated coonhound. We tried to take care of him. But he only lived about 4 days.
Having a pet squirrel would've been neat.
Probably an overpopulation thing. We saw two squirrels that had no hair on their tails and another that was seriously messed up too. He would only run in left-hand circles (big left circle or small left circle depending on where he wanted to go) on campus about a mile away that year.