Neither team has lost back to back games since I dunno when.

So..

Game 1 Heat lost to the Spurs
Game 2 Spurs lost to the Heat
Game 3 Heat lost to the Spurs
Game 4 Spurs lost to the Heat
Game 5 Heat will lose to the Spurs
Game 6 Spurs will lose to the Heat (Hope not!). Either that or .. If push comes to shove...
Game 7