Not a Psychiatrist but from the article it appears to me he has had some form of mental illness for quite a while and it wasn't just a CTE issue though that probably exacerbated the situation; the extreme highs followed by extreme lows, irrationality, lashing out at people, etc, etc. No excuses for his narcissistic and self serving "the rules don't apply to me" behavior though. Interesting take on Tomlin's "management" of the situation. His "I'll bend the rules for him as long as the pros outweigh the cons" probably kept Mr Big idiot on the team longer than he would have been otherwise but Tomlin had to know he was just making a bad situation worse in the long run by coddling him.