However, some have suggested he shot TM while he was on top of him. That could very well have happened. I have my doubts.
GZ could have shot TM from a distance, and it still would be a justifiable self defense shooting. The problems, would be if he made any statements and if the science stated otherwise.
Autopsy and some results should be back in a couple of weeks. It will answer a lot of questions if enough tests were ordered.