Wow I was waiting for this to happen. When I killed him out of pure logic, he and I were left I kill him, he says I rdm and asked for a voteban on me. Then he continued to ask and hate me. It was fun because he didn't rdm me and only bitched about me killing him all the time.
So it seems he now started to rdm. It was bound to happen, honestly. He had all the personality traits.