He and Darren got into a pissing match over one of the Paypal threads. Bogs got ticked off, and left.
He may be a master machinist, but he sure doesn't have a lot of tolerance for others and their personal opinions. Sorry to see him go, but the "take my ball and go home" attitude is not very mature. Be on the web long enough, and someone is sure to get your dander up. You ignore it, and move on.