Did he write "reduced to" or the actual speed as a note on the ticket? In NM if they do you a favor by reducing the speed, it is only good for a guilty plea. If you try to fight it, the original speed or most severe infraction comes back.
Also, he will say you were speeding before the tailgating started and that he was following you while he ran your plates and he stopped you when you started driving erratically.
Next time something like that happens, dial 911 and say you think you are a victim of road rage and you are in fear of your life.
Officers have to testify to the facts in court under oath. My reduced tickets are amended back to the actual charge, then the judge reduces it back afterwards
He should only testify to what he saw. It's funny he didn't charge you for being in the carpool lane if I remember your post correctly.
And please don't ever tie up emergency lines with BS and get 40 cops responding to you. I jokingly say I hate cell phones, you just wouldn't believe the number of BS calls we get because someone is a child instead of an adult.