Eight shots at a fleeing man and a filed report that is contradicted by video evidence - evidence that includes dropping the taser by the body (planting evidence) doesn’t leave a lot of grey area. There was no need to kill that man in that situation.
A man facing a murder charge who has conclusive evidence against him also indicating obstruction of justice (dropping the taser by the body after the kill) and falsifying official documents is not likely to have any other part of his testimony believed at trial.
My guess is that he’s looking at a 20 year sentence.
It’s easy to say there was no need to kill him with 20/20 hindsight (although we really don’t know that that’s true). But the law doesn’t use 20/20 hindsight as the standard in these cases. It uses the reasonable perception of the officer at the time. That’s why there’s a grey area.
The planted evidence thing is a distraction. He could just as easily have been securing a loose weapon so a bystander couldn’t get hold of it. We’ll just have to see on that one.