Your "pointing" explanation makes sense. He has been this way ever since, so whatever it is, it didn't heal. He tips to the side all the time, so I think its 100% neuro based. He may have no feel in that foot at all.
What is really sad, is the fact that he has to be submissive to all others because he can't win any fights. When other squirrels show up in my camper, he becomes instantly nervous and either tries to hide on the dash, seeks shelter around me, or runs out in a hurry. When I'm outside the camper with some food, he gets chased away all the time, and I have to follow him in order to feed him. He is so very happy when he sees me offering a nut after he just got chased away.
He always eats close to me.