The San Antonio Spurs had just lost Game 3 of the Western Conference finals in demoralizing fashion. Oklahoma City had beaten them by 15 points on the Spurs’ home court to take a 2-1 series lead, and San Antonio decided to have a closed-door meeting immediately following the game. This wasn’t just any team meeting, though. In the locker room were front office personnel, trainers, various staff — people who wouldn’t normally be in there postgame. “We closed the doors. ‘We don’t let anybody know