If Zimmerman screws this up, he'll be at worst - admitting to manslaughter. Despite everything speculated, it's still a grey area if he's guilty or not. In addition, going on Hannity does nothing to help him in court.
Let me put it this way. I wouldn't be talking if I was in his shoes, despite my training.
There is no case here. The SYGlaw states you must be in fear of your life. Injuries or not is not an issue. Who’s to day “Z” did not “fear” for his life?
Your post is very wise.