First of all, I'm sorry about the butchered quote. This website is unfriendly.
Second, that chat thing made a really good summary of this, that's interesting as hell.
Finally, it looks to me like your summary is exactly why he was banned but who knows if he's lying or not. People say the game gives you a captcha if you're acting suspicious though and he didn't mention anything like that. I'd love to see a staff response to this because even if the guy was cheating it still needs some kind of investigation and summary when it's over public or not.