Fight fight fight for your son.
Oh how I wished someone had believed and fought for me.

He needs you...don't give up. There has to be some sort of exception for abuse regarding gifts and ineligibility.

And definitely get him into counseling. He will need that.

And make sure he KNOWS that you believe him, that you do not blame him for any of it, and that you are fighting for him. Regardless of what happens with laws or charges filed. Knowing that you are in his corner to fight for him and protect him will make ALL the difference. He needs YOU.