Even if you ignore all of the officials' mistakes in that series up to the end of game 7, you could say that they called a foul on Ginobili (which was a legit call) at the very end of the game, but 5 seconds later decided to 'let the players decide the game' when 2 Mavs players were literally hanging onto Duncan to keep him from dunking the ball.
I hate the arbitrary period at the end of the game when the refs decide to swallow their whistles. The fact that it's arbitrary makes it easier for personal bias to enter into the decision. Remember a couple years ago when Dirk actually tackled Finley when Mike was shooting a 3 at the end of a regular season game? Apparently that's not a foul. Same with Fischer fouling Barry, and Terry jumping into Mason with no call (that last one hasn't happened yet, but something like it inevitably will because the NBA sees errors and sits on its hands).
And you can put people down for complaining about bad calls, but it would help if the NBA did what it could to rectify the problems that do occur. I'm not so much worried about the bad calls in the past as much as those I'm bound to see again in the future.