Thanks for sharing everyone. Since my last post I left my house to stay at my parents for the weekend. That seemed to help him out A LOT. At my home we have another dog which he wanted to go play with desperately, and mean old mom just wouldn't let him. At my parents house there are no other dogs, just different people who he had already met.
He seems to be back to his normal self, and has bonded with the rest of my family. They want me to go home and leave Kaji with them.
I think the key to keeping him calm was bringing him to my parents house. We'll see if his evil-fur-twin will come back, we're going home tomorrow. I will keep your stories in mind. THANKS A BUNCH!!!