Update
I finally had my day and court and happy to report that the judge agreed with my position and I was found not guilty. I basically said the officer slammed his hand on my window and yelled stop which I did. The officer tried to say that he got me to stop and then when he was moving the other vehicle I started to move again. Not sure where that came from but I explained my side to the judge and he found enough inconsistency to rule in my favor.
The officer did say he made eye contact with me and used a hand signal to stop also in his defense. In my rebuttal I kept hammering home the point that I stopped immediately when he slammed my window and yelled stop. That he was on the median and I noticed the other car was still in the gate area when I stopped. Just happy it's over at this point since I had to come back once because the officer didn't show.