Yeah I doubt it, as far as I would gather rabbit punches are more dangerous over the long run and are illegal more due to the fact that they are almost always thrown when the fighters are tied up. Considering the onset of McClellan's brain damage after the fight and prior problems you have to think it was just a matter of time before it happened, sadly. What gets me more about watching that fight is that Benn was basically held up and pushed back into the ring by some members of his camp(I imagine?), he could've very well been stopped in the first round without outside help imo.