1. The masked gunman was in grave danger when in fact he had stepped aside.
2. The car accelerated rapidly before the shots instead of after the driver was in immeasurable agony.
3. All three shots by masked gunman were in self defense. Not that the next two shots were in the driver's face from side window while standing well clear of the vehicle.
In short, other video evidence clearly rules out any possibility that "he had stepped aside". And we can see the relative timing of when the SUV's wheels start to spin, too, even in the video from behind the SUV where Good is obscured from view by the other officer.