Are people really thinking that the Spurs shut off the AC on purpose to do exactly what happened? Great idea, let's put 19k people in an arena, and raise the heat to manipulate one person's body chemistry and have him go out at a clutch moment. Hopefully none of the other thousands of people start falling out, but if they do, we'll just call it collateral damage. I was at the game, and it was hotter than hell - but, AC units go out. My dad is the facilities manager for a mega church, and the AC unit is the bane of his existence. He gets calls a few times a week that the AC is malfunctioning or has gone out entirely.
The Spurs won because they shot 14-16 in the 4th quarter and 59% for the game. Without 24 turnovers, the Spurs win that game by 20. James is the best player on the planet, but he doesn't swing the game by 25 points. They had closed to two points before he left.