I would assume this is probably it for him after a Hall of Fame career and what better way to go out with the team where all the "highs" were experienced.
For anyone that's never been in the same dugout for a season, you've sorely missed out. He's one of the most genuine, shoot ya straight, teammates that you could have. (And he's quite hilarious too)
Happy for you BJ and Helmer is a class act for allowing this to happen.