I shudder to think of what kind of steroids could drive someone to such a homicidal frenzy... but I've heard of that kind of thing before, only never to such a grotesque extent.
Back in the WCW days, when I followed the pro wrestling scene, Benoit always came across as calm, collected and serious without being single-minded. If his in-ring persona was even close to his real personality, then the alleged events of the weekend represent an absolute reversal of everything he seemed to represent.