Looking [1], it does appear that Renee attempted to run the car right into the ICE officer, the wheels were still pointing slightly left, and the officer was still in front of the car. Also in [2] you can see that she was looking directly at the officer during this initial acceleration attempt. The only thing that saved the officer in that initial attempt was the loss of traction due to the icy road.
After that, indeed the wheels were pointing away from the officer and arguably there was no more danger to him, but after the clear attempt to hit him, you cannot realistically expect the officer, in a split second, to re-evaluate if her intentions to hurt anybody changed or not. At this point his life was already threatened. He doesn’t know what she is doing and waiting to find out could mean that he is dead.
It's like they live in a different reality or something.
Then please explain your understanding of the law, with regards to the circumstances under which LEO are permitted to use their weapons.
Then please watch https://www.youtube.com/watch?v=bDda-L_ZOE8 and cite at least one point of disagreement with the legal argument presented, on any objective grounds (factual or legal).