I know it was just one quarter, but I really like what Magic Johnson said in the postgame about LeBron needing to involve his teammates vs doing it himself IF the Heat are going to win the series. Everyone needed to shutup about LeBron's stats or decision making on individually plays - basketball is a team game. I think last night went a long way towards establishing the Heat as a higher functioning unit and no doubt in my mind the Heat will win at least once in San Antonio.
Besides LeBron getting others involved, the biggest change (that no one is talking about) is Bosh played much more intelligently, took good shots and helped the Heat's offense run more smoothly. That's a big story after the saboteur doofus he was in the Indiana series and game 1. I didn't really have to hate Bosh once last night. It is entirely possible that the Heat have now clicked back into what was working during their near record-breaking winning streak and San Antonio will need perfect execution to win games.
Also I'm continually amazed how the role players always play better at home, even though last night it was kind of the opposite for the Spurs (Green & Leonard were great, Parker & Duncan below normal standards). Yes they aren't the stars now, but almost every role player in the NBA was 'the man' in high school and probably college. Just fascinating to me that the level of competition is so high that only the best of the best can excel in any environment.
So I think the key going forward is between Chalmers, Ray, Miller/Battier & Haslem the Heat need 2 or 3 (if Wade continues to be mediocre) to play well to win. Ray has been a superstar in the NBA (so no road worries for him), but he's increasingly dependent on LeBron to set him up.
Last point is that was REALLY remarkable last night. LeBron's game 6 versus the Celtics last year was awe-inspiring and now legendary, but tough for me to fully appreciate because I was rooting for Ray and the green. Now with Ray on the C's its a little easier to root for and appreciate LeBron. That sequence including the phenomenal block was really memorable and is now etched in his superstar legacy.