What is it with the Laker fans? Something happens with Kobe..."hey, let's go to the Suns board!"
Anyway, I'm fairly confident that's the first time Kobe's ever followed through on a shot that way in his entire life. So, the
best-case explanation here is that Kobe was flopping to try to throw the game to his team, leaving all the casual fans watching on network TV (one of the few network games of the year) to wonder why they had wasted their time.
The other scenario is that Kobe hit Ginobili intentionally, and here I think the Mike Miller foul comes into play, showing that Kobe has a history of trying to retaliate (for offenses real or imagined) by delivering a cheap shot during gameplay.
Since the league office had plenty of time to go over the play in slow motion, from several angles, my guess is they saw something they didn't like.