I don't know whether he's changed his ways or not, but I see him sometimes on a group where he's been behaving himself reasonably well. It's a single-topic group (avian nutrition) so there may not be as much scope for him to get in trouble as there is in a general purpose group.

He's going to be trouble.....
That's what over opinionated.....obnoxious.... people do....
Oppppppps..... so unlike me to be nasty

he has been banned for 6 months on Avian Ave, after that he will be allowed to come back only if he behaves himself.