If you notice, the moment the shot was fired, everyone in the mob backed off for a few precious seconds.
Most mobs will run away when shots are fired. Two things worked against those in the vehicle in the situation mentioned.
One, the shooter stopped shooting, showing weakness.
Two, it was likely an unusually motivated and cohesive mob.
I agree, getting away is the best policy. But shooting is likely to make an opening, as you mentioned. If more shots had been fired, there likely would have been more of an opening.
Imho for what its worth, forget the gun.Just chest thumping and machismo on who has the bigger badder gun.
Bikers carry guns too, what if they carried Uzis?
The discussion then travel to wounded pride and an escalation?
This is like trying to shoot a swarm of hornets with a .22.
Bikes at speed cannot swerve around debris, traction is minimal.
Take out the machine, besides myself I would not want to kill an undercover cop, good or bad, they are people trying to do a job.
Evade, and if stopped then go offensive, because then you have more stationary targets.