First of all that is a forum rules issue, not a trust system issue. Under the forum administration he was unbanned, so the matter was resolved. The attention really only came once he dared speak nothing but praise to one of the chosen clowns.
All I'm saying that your contrived timeline doesn't make sense nor is there some immunity rule that disallows looking into user's past shady dealings once they say a bad word about someone.
Otherwise you wouldn't have been able to go looking for peanuts on nutildah. Don't tell me you're jealous that you didn't find anything and marlboroza did LOL.