“If by “instigated” you mean stood there holding a shotgun while some idiot runs up and tries to take it away from him. Sure.”
Watch the video.
He went from the left side of the road to in font of the truck on the right side of the double yellow lines.
The runner ran away from him by going to the right.
Shooter moved to where the runner was.
Look at the video up to 15 sec. He is always on the left side of the double yellow lines in incoming traffic lane.
The runner veers right to run around the truck on the right sude which is also running as far as possible from where the shotgun holder is standing.
Next time the shotgun holder is visible he has moved right and is now on the right side if the double yellow line.
Unless the road moved under him he didn’t “just stand there.”
I'll look at it more closely. I will especially look for the points you mentioned. All the times I was watching it I was focused on what Arbery was doing, and what I saw looked nuts to me.
From what I can see from rewatching the video, it looks like the guy holding the gun advanced about three feet to barely cross the yellow line at approximately the time we hear the gun fire.
Next time the shotgun holder is visible he has moved right and is now on the right side if the double yellow line.
Okay, but it looks by that time the "jogger" was already running at him.
But i'll give you a point for that detail.