You described him as going ballistic and tearing up your arm. So you know Kitten was taken in at days old and hand raised by a couple of rank armatures. She would pull the same kind of stunts. She was never disciplined , something no one did her entire life. She ruled. We did however find that clicker training and redirection ended these kind of attacks. Which to me seem a combination of fear, play aggression and lack of confidence. We couldn't have had a closer bond if she had been a real baby. Stress can manifest in many ways including not knowing how to express yourself.
Well it's not as bad as all that, and I'm sorry if I gave that impression. We have an incredibly tight bond, and the vast majority of the time there's no problem. It's just that he has his little outbursts and when he does, he bites and scratches.
I just can't fathom how he could be scared of me or how he could be stressed.