Jim O'Brien joins Byron Scott: on the unemployment line. Not surprisingly, it's the result of a major argument about "personnel and playing time issues" between him and Danny Ainge. You could pretty much see this coming; Ainge has been trading away O'Brien's favorite players (Walker and Williams and Battie) all season long, and O'Brien hasn't done a great job developing Ainge's draft picks.
You have to wonder if the defensive coaching genius, Dick Harter, will depart with O'Brien. He's a big part of whatever success the Celtics have had recently, and it'd hurt a lot to lose him. For that matter, who will the Celtics get to replace O'Brien? John Carroll gets it in the short run; is this Dennis Johnson's big chance to come back and coach for a teammate?