Joe Mazzulla processed the first half, saw the halftime score and made a rare decision. The Celtics coach waved the white flag. With the Celtics trailing by 37 at halftime, Mazzulla pulled his starters. He gave them the rest of the night off. Instead, he started an allbench lineup of Sam Hauser, Payton Pritchard, Lamar Stevens, Svi Mykhailiuk and Luke Kornet. That unit and the rest of the bench…