I don't think the starter meant to knock him on the ground, was trying to drag his ass out of there before someone potentially gets injured. can't be putting climbing in a staging raced car. the starter didn't have time to politely explain that he was being stupid.

BTW is it because of street outlaws that everyone needs someone on the line waiving them in? I get it for cars that it's hard to see over massive blowers or scoops, but cmon.