Enviornmental. Feeding off of their owner/handler. I've actually seen what you mention happen with pups multiple times. Whether he had hands put on him a time or two, or a boot up his arse one good time, we shall never know, but it all can do with the environment and the people that run it.
This is what I was thinking as well MrsLa but I still just can't fathom what the hell happened that screwed him up so bad in such a short period of time, I honestly felt bad for the little joker, he was balls to the walls not 6 months ago now he is scared to death of his own shadow. I guess the only positive to the whole situation is that I didn't see an ounce of meanness/ agressivness in him while he was at the house so I guess the right person could take and deal with him but I will be the first to tell you that im not that person. My curr puppies are generally a bit wild as pups but come around and are predominately out going and confident overall and he was the same way when I bought him at 6 weeks but something very negative happened to him in the past few months to make him how he is today (what exactly, we will never know)
thanks for the input!