I think they intentionally set up the Spurs for failure in last year's game @Miami. Miami was coming off of 5 days rest, but for the Spurs it was:
Last game in a 16-game month
Last of a 6 game road trip
Second night of a back-to-back
4th game in 5 days
Tough divisional game coming up next after just one day's rest
Stern fined the Spurs because they cheated the fans of the best entertainment possible, implying that the league is trying to deliver the best show. However, there are three options:
1. The NBA's goal is to present the best show possible
2. The NBA doesn't care whether it presents the best show possible
3. The NBA has other goals that it values more heavily than presenting the best show possible
If number 1 is true, as Stern claimed, they are neglecting their only short term input on that variable, which is scheduling. That is hard to believe. Miami vs. SA is one of your marquee match ups, and thus one of the least likely to "slip through the cracks".
If number 2 is true, that vibes with their consistently horrific scheduling disparities.
If number 3 is true, you no longer have to bank on apathy to explain the stupid schedules. The SA @ Miami 2013 debacle makes perfect sense, as the NBA is trying to deliver its headliner franchise a prime time, national television win over the team they hate seeing at the top of the standings every year. It also explains why Stern would get upset when Pop took the wind out of his "YAY HEAT BOO SPURS" plan.
I usually don't like conspiracies, but I have a hard time believing that the NBA is so incompetent as to accidentally put on a marquee contest where one team is exhausted and the other hasn't played for 6 days,