@snood,
The whole thing pretty much.
What actually happened, start to finish.
Since there is only one person involved who's still alive and since he has already shown that he'll change his story I don't know if it will be completely cleared up ever.
But I think there are still a lot of questions.
I hope it's clear that I'm saying that from what we know now, I think that Zimmerman a) should be charged with a crime and b) is more likely to be guilty than innocent of that crime. But that the Clementi case taught me that what we think we know now might be a fraction of what's actually pertinent to the case.