There are way to many unknown variables in this story to make any real observations without speculating wildly...
There was an assault initially on a woman, there was obvious disparity of force...that works for him
(Note: to those that say simply pushing a woman (or anyone for that matter) isn't deadly force, I am sure there are multiple perpetrators in our prisons right now who thought the same thing when they pushed their GF/Wife in anger and oops, they hit their head, they broke an arm, etc.)
The perpetrator/victim chased them down...that definitely works in his case as well.
Not really sure why everyone keeps saying he should have used OC, wouldn't that be construed as escalation, if it was truly an ongoing argument?
The same thing happened to my brother, almost exactly without the assault on the GF, he was attacked by multiple youths on VA Beach, he pulled a gun, they ran and then called the police first...go figure. He isn't in jail, he wasn't convicted of a felony, it was dropped to simple assault. Mostly the reason he was charged with anything, was that not being the brightest or sharpest tool in the box, he ran his mouth on and on to the arresting officers....
I am unsure of his duty to retreat in Texas, in Florida we don't have a duty to retreat.
Also, some are arguing that if you escalate a confrontation in anyway you deserve the consequences, so if you flip a guy off in traffic, he has legal license to assault you and you can't claim self-defense, that sounds like a dubious legal theory to me.
I'll bet you a box of donuts the charge is dropped to misdemeanor assault in a plea bargain or that the witness finds another place to be the day of the court date, when he realizes that he can still be sued civilly....