Did he push the guy? Did he hit the guy? Did he yell at the guy he was going to beat him up or hunt down his family and beat them? If so i may agree with you.

Did he yell and drop some F - bombs telling the guy he was a jerk and rant and rave. That seems like something a tow truck driver should expect when he his booting a car. Emotions will be high and as long as nothing got physical there is just nothing to see here.