I'm am almost sure that after GZ's defense counsel is presented with a very tight timeline of what REALLY occured based on phone records from TM's g/f and 911 calls they will have no choice but to plea down and call it a day. I don't think it's a smart move to take this to trial. How can you claim that someone attacked you whilst the attacker was on a phone call? If he got off the phone at 7:16p and he was dead by 7:17p what transpired between less than a minute that would cause GZ to fear his death? Plus, the sidewalk story is going to get blown to pieces as it's not true.
Plus the time of the beginning of the 911 call with the screams is listed as 7:16. The screams are heard from the very beginning of the call so that leaves no time for much yelling back and forth between the two men. The screams go on for over 40 seconds - I timed them at 44 seconds - then are cut off by the gunshot.
The 911 call transcripts are available at http://news.blogs.cnn.com/2012/03/20/911-calls-paint-picture-of-chaos-after-florida-teen-is-shot/