Based on your typing, method of attaching pics, posting on an E90 forum even though you have an Audi, legal violations, having your buddy out of the car snapping pics of the cop and yet still unabashed ego... I think you really should consider what the officer said as being the truth.
That said, the ticket the officer gave you sounds weak. You did get off easy by the sound of it, but if you can beat the ticket I'd do it. Assuming you're young, you do not want a ticket like that on your record. Insurance companies will make sure the initial fine is only the begining of the cost of that ticket.