I'm not sure to what extent this question can be answered, but it's one I'm desperately curious about.
I followed some meta questions and links to chat logs, but I still can't figure out what the dispute was about. This is not intended to dig-up dirt or expose anyone or anything. So, please keep this page clean and directed to this point:
Is there anything, we, the community can do, to bring Wheat Williams back?
His valuable contributions remain as unsearchable ghost answers, but if he's upset and left, then we won't be getting any more. Maybe that's selfish, but I feel sad to lose him.