He looks psycho in this interview.
Look at his face. He is acting. He is really pissed, but he is acting. It has worked for him in the past, so he thought he would use this tactic. This is fairly refined acting, in his mind. Scare the interviewer. Intimmidate. Like deNiro...."You lookin' at me?...Are you lookin' at me?" He has practiced it. He is exposed and is flailing.