In addition, there will be a video from the police officer's vehicle that should coaberate this story.
If these types of things are not established as evidence...if they are strangely missing...then I will begin to conclude that the officer's story is not correct.
The reports of this officer's other troubles are not something that lends credence to the "extensive law enforcement background," they are claiming. If he has had six or eight jobs in eight years, and had to change because of his troubles...perhaps he should not be out interfacing with the public as a law enforcement officer in the first place.
But all of that has to be established.
Clearly, this kid's prior history and what is being alleged do not match up...but that does not mean something was not going on in his life that drove him to behave badly. Time and evidence will tell what actually occurred.