Bummy, I don't know if you threw that rear brake idea out to get me worked up or SAR, but I see SAR too the bait first. The rider was obviously trying to show the power of his super fast bike, so he dropped down (I don't know how many gears) and accelerated hard...now is that when a rider would apply the rear brake? You clearly see the rear tire slip out from acelleration...it doesn't lock up

The road surface looked pretty rough and he was close to the curb, so debris could have been a factor too.
Nice try at an analysis Bummy, but I don't think so
