Why assume the motorcyclist deliberately left the cycle there to cause trouble? It seems an unlikely thing to do - moatsies are expensive.

For example, I had a friend who was delivering mail and was suddenly stricken with "the worst pain he had ever felt in his life." He drove to a hospital and abandoned his truck at the ER door. (It turned out to be a kidney stone.) Maybe something like that happened to the cyclist.

When something like this happens, our brains immediately assume the worst. However, after a couple of minutes, intelligence ought to tell us that we don't know all the circumstances, and to stop raising our blood pressure over it.