To be honest, ab90 was in my world Just a Bit Outside (previously Ott), and took over a team that had tanked for at least 8 consecutive seasons. The previous owner had been called out multiple times for tanking before suddenly walking away just as the farm system had gotten so bloated that they weren't able to protect all these insanely good prospects in Rule 5. He also joined another world I was participating in, realized it wasn't performing the way he wanted it to, and left in the middle of the season so that his record wouldn't be dinged. It's also no coincedence that he has chosen to walk away from his franchise now in JaBO since they are no longer winning WS titles.
This offseason while recruiting new users to JaBO, I became aware that users are buying teams from other users with real-life money (coincendentally with a report that ab90 was trying to solicit $20 at one point for somebody to take over his JaBO franchise). I don't know for certain the circumstances of how ab90 got his team in Ott (now JaBO), but it seems awfully strange that someone would pay money/use credits to tank for 8+ consecutive seasons just to leave as the fruit became ripe.
At one point, he stated that WIS had invited him to give a speech/interview about his success, so you may be able to contact somebody there to find footage or a transcript of that piece. He also supposedly is on an episode of Fox's Super Human doing something with Mike Tyson. This is all according to him.
He may well be very intelligent and gifted at this game. I can only speak of my observations of him and my experiences with him.