Except that depends on when you are speaking of the confrontation starting.
It may in fact be that Trayvon did start the physical confrontation, I don't believe that, but if that is even so, the States Attorney's office appears to be saying that the confrontation started when GZ got out of his vehicle to follow Trayvon...that he had if not a lawful order, which I am sure some can and will argue was valid, but that he at the least had instructions from the LE dispatch to cease following Trayvon that he dismissed, and continued to follow, which in their opinion puts Trayvon squarely in the position of standing his ground. The second degree murder vs. manslaughter they have hands down, since they only have to show that whatever actions taken were done with malice or ill will to begin with, and the "Those A@@#$% always geet away, and the F*&in punks, will statisfy that requirement, and they are on tape in George Zimmerman's own voice and indisputable as to who said them and when.
Fact is, I think they have more, there was some discussion on one of the shows about a witness who saw two people running, one following the other, and if this is so, then even without evidence of who struck the first blow, if Zimmerman was actually chasing Martin, then he could not possibly have been standing his ground, and IMO Martin was found far too close to home for Martin to have been chasing Zimmerman. IMO JMHO and stuff.
Yes, the statement about the people running was part of the investigator's testimony just after 1:37:00 mark on the recording here:
George Zimmerman bond hearing
http://www.wral.com/news/video/11004815/#/vid11004815