I was waiting in an intersection while someone ahead of me was waiting to actually turn left. I started to go, got up to maybe five or so MPH when a truck realized he wasn't going to be able to get around me and tried to aggressively pass on the right. I got spooked and defended my lane, got up to maybe 15/20 MPH and the tuck couldn't get by because he was trying to go around in the intersection (ie he had to merge back in if he wanted to keep going). A cop pulled us both over. He asked the driver what happened, let him go and then came over to me and asked why I passed him like that, when I hadn't ever passed him because he never passed me. My passenger saw everything. Also, the cop made me get out and told me I had an ego problem. What are my chances?