[Durus]

Sorry, my mistake, he clearly writes that and I missed it. I’m not sure where he get’s that and even argues against the concept further in the article.

[E. Pluribus Unum]

After looking at it again, it's possible that he's racking the slide while pointing the gun at the perp with both hands in a Weaver stance. It sure looks to me like he's shooting, but then he shoots one-handed a few seconds later. I don't see why he'd switch to one-handed from two-handed.

Maybe he did rack the slide while the gun was aimed at the perp, but that is a weird way of doing it.

I'm guessing he did it that way to confuse the perp. It sure has me confused.