Some things cannot be fixed. I urge you to get a qualified behaviorist (veterinary) to evaluate him. If he is truly unstable, rehoming him is not fair to him or the new home.
I hope he gets out of the shelter quickly as that is no place for him to be since he did have a home! He looks thin and probably not filled out yet. My rescue boy has a narrow face, is tall, and from poor breeding. The Austin Animal Center is trying to be a no-kill shelter but it did run out of space a few months ago.
Anyone in TX looking for a male B or B mix? He is a cutie though!
Jennifer
Tegs,
Sorry that it took me a while to reply. I would love to trade pics with you. Everyday that passes, I am reminded of the Basenji Code. She is a bolter, I am happy that we have a storm door to help.