It comes down to only have $10 to spend per corner(soft science of road racing, keith code). His $10 were all spent on braking and avoiding the other guy, rather than looking into the corner, and getting round it.
That almost happend to me the first time i met sam. The guy we where out with flipped his bike pretty much right over me and he landed just i front of me. We were doing around 75 and catching up to a bus that was indecating to pull up right befor a corner. I slowed down and just befor i stopped his bike flew over me, he hadn't noticed the bus and also not me stop, he hit his rear break skidded then hit his front one hard and flipped it big time. He did 2k damage.