What would you do?

Ps the biggest problem is, my grandmother who feels sorry for him, wants to let him back in the house even tho she has the restraining order.. He manipulates anyone and everyone he can get close too. Hehehe i did get him back, i threw a rochester qj at his bike tire making him smack the mailbox, out of anger, although i think i shouldnt have. I was angry for yet another car of mine he messed with. My second car a 78 ss elcamino,which he tore off the trim pieces, and broke my cowl hood in pieces, and claims to have not been around the car(his friend let me know he did it, and that he needs help bad) and since stopped hanging out with him, for obviouse reasons.