Unbelievable. He should absolutely be removed from the department and any tickets he ever wrote regarding someone's use of a cell phone while driving should be cancelled and refunds for fines should be issued.
Not knowing the legal outcome, I'm sure wondering how it would have gone if the biker...
I'd like to recommend a hat for you to wear on your next outing. I'd also recommend a white handkerchief hanging out of a rear pocket, flapping in the breeze, for additional safety.