Because you said:
Maybe the cop was just pissed — and shot him anyway.
Sounds pretty biased to me, especially since by your own words "then investigation is ongoing."
Must be quite a disappointment to you to see the cop exonerated.
Please don’t make this personal. There’s no reason to. I don’t care how this turns out one way or the other.
And “maybe” is absolutely consistent with waiting for all the facts.
Plus, the officer has not been exonerated yet. Not to say he won’t be — but it hasn’t happened yet.
But since you want to speculate — by guess is that the perp was shot shortly after the officer won the struggle for his weapon. The perp may have made a show of giving up (maybe even intended to) but the officer in that situation is battling instinct versus training.
All speculation at this point, of course.