The report is obviously flawed and it's hard to draw any conclusions (except that it appears biased in favor of the driver). The dismissed charge was hit and run, and an element of that charge is knowledge of the accident. In the standard right hook, if the cyclist brakes hard and avoids or taps the car, the driver might not know there was an accident. The correct charge is violation of right of way (in Florida, a noncriminal infraction), not a criminal charge of leaving the scene of an accident.