It was a low speed chase. Maintain a distance that keeps him in sight but doesn't pressure him to take drastic action (policy in many places due to so many bystander and police deaths).

When he stops and prepares to exit the vehicle stop at a reasonable distance and exit, taking cover behind the vehicle. In this case weapons drawn would be acceptable due to the chase and erratic behavior. Light him up with the spotlights and headlights.

When he exits the vehicle order him to the ground. Most likely this man would not comply. Have one of the four officers prepare less than lethal methods.

Assuming he approaches and no weapon is evident, attempt the less-than-lethal option. If effective, move in and make the arrest.

If ineffective and no weapon is evident, flank him with two officers, keeping out of line of fire. Attempt additional less than lethal options. If ineffective and no weapon is evident, rush him and use training to subdue him. Three cops should be plenty.

If at any point during this he reaches for or produces a weapon, light his ass up because at that point he's an immediate threat to life and has made his intent obvious.

The assumption would be at least one less than lethal method was effective. If he never presents a weapon he cannot be considered an immediate and deadly threat. If he does present a threat the police can then show the public they gave him every option any reasonable person could and the death is warranted.

Full disclaimer: I'm no cop and could easily be way off here. I've no problem admitting that. This is based only off discussions with my brother, ride alongs discussing scenarios, and stories told by police drinking buddies back in the day as well as watching police handle a couple belligerent neighbors over the years.

It's just purely hypothetical arm chair quarterbacking I would present in answer to your question based on the very limited description in the article. We all know how articles tend to leave out facts or even distort them.

In other words, it's a guess.