AB and Gordon are two sad cases.
Gordon apparently has demons related to drug use that, despite his best intentions and the efforts of those around him, he just can't overcome. I really feel for the guy and wish him well.
AB appears to be detached from reality in some significant way...i'm not a shrink and i've never met the guy, so i can't begin to figure it out, but he, literally, had everything with three different teams over the last two years and couldn't manage himself. If he ever seeks the help he needs, I hope he gets it.