AUBURN HILLS - Will Bynum scored 25 points and dished out 10 assists as the Detroit Pistons stunned the defending champion Miami Heat, 109-99, at the Palace Friday night. The Pistons overcame an early 15-point deficit to snap the Heat’s six-game winning streak, despite 35 points by LeBron James. The PIstons are off Saturday, while the Bulls host the Wizards at the United Center.