The display of the firearm seemed to end the threat, the dead guy was retreating, can’t tell if the shot takes place in this video.....
If the first shot occurred at the end of the clip in #69, the victim was clearly turning away from the shooter. The bullet path should show an entry wound on the left side or left front-side of the body with a path diagonally through the body with a possible exit wound in the right side or right rear-side of the victim.
If the victim was still hovering over the shooter after the attack, then there would be no question that the shooting was justified. The threat would have be reasonably eminent and the shooter wouldn't have to wait for the attacker to begin kicking him or trying to curb-stomp him. However, the attacker clearly broke off the attack and the shooter didn't fire immediately upon pulling his gun.
Did the shooter have sufficient time to realize that the victim was apparently breaking off the attack? My guess is that a jury will probably have to make the ultimate call on this question.
Yes he was retreating.