This isn't anything new in short track racing, even in NASCAR sanctioned events. Usually, if the incident happens on the track and in the heat of the moment, depending on how extreme it gets, the parties involved might get a penalty or two and maybe prevented from racing for a week or two, but it's something that happens. However, it's when the incident pours over into the pits, well after the on track incident happens is when NASCAR really lowers the boom. Here in Winston Salem, NASCAR banned a couple of guys indefinately for beating the hell out of another driver well after the racing incident. We have plenty of police at the track and we've seen them pull a driver out of the car more than once.
One must remember that this is a very high adrenalin sport and emotions can run rampant. NASCAR or anyone else will never be able to totally control those emotions and what they can do. Keeping them in check to a minimum is about all one can hope for and when it goes beyond that, then they can do more, but they can't ban a guy for fighting or they might not have a field of veteran drivers.