The quick intensity of Clinton's reaction makes me wonder if there were any brain effects from his recent surgery.
There are certain side or after effects of such an invasive procedure such as open heart surgery. In particular, Clinton could experience lack or loss of concentration, high(er) stress, fatigue, tiredness and considerable emotional feelings. I suspect this is partially why Clinton is reacting this way in the Jennings interview. I presume this interview was filmed after his surgery? Can anyone verify this?
Clinton could also experience mild depression and vivid and possibly distrubing dreams. I'd say he has already experienced this since he recently said he saw a vision of heaven and also of Hilary and Chelsea during his surgery. I doubt that Clinton would permit the world to see him experience a loss of confidence, another possible side effect of heart surgery.
None of these side effects can mask the visceral hatred of Clinton for those who oppose him. If I remember correctly, this is also a characteristic of a narcissistic personality disorder, e.g., thin skin.