That's gotta be the hardest part about being on THE BIG STAGE for Celebrities. Something Contractual, Personal, etc, could have been bothering him for days, BUT THE SHOW MUST GO ON!!! I was also like "Wow, he's not engaging at all".
i read his book, from what he expressed, he was going thru a lot at this time… on the outside it seemed like he was on top of the world but internally realistically he was hurting… so imagine dealing with that, while the world is always staring at u, lusting after u, always desiring opportunities from u in whatever which way.