Would a cop at an intersection with a redlight camera be able to pull you over for running the light?
You are getting the ticket in the mail from the machine but the violation was in plain sight of the officer. If I was a cop I would feel odd just letting the person go, but if there were no other violations I could see other than that what other choice would I have? I would figure that would be double jeopordy if he gave you a real (in person) ticket for it.