Nope, I ain't goin' for it either. The "vehicle under control at all times" is just a catch-all to fill the coffers and avoid having to really investigate an accident.
If everyone slowed abruptly at every rise in the road, every blind bend, and every intersection, no one would ever get anywhere and there would be a lot more accidents....
The man wrecked his bike and banged himself up and still doesn't know himself how it happened. There was no other vehicle involved, no other injury, and no property damage.
It's a b.s. ticket.