He's trying to 'sell you' on pleading guilty to a misdemeanor criminal offense with the "hey I'm your buddy, giving you a break, it's no points, I'm a good guy, I don't want to jam you up" bull crap.
Fight it unless you want a misdemeanor criminal conviction on your record. You might want to ask this question here also: GLFWDA
You may even get some help with the matter.
That law is arbitrary and capricious on it's face, with no recognized standard for enforcement. Unless you went out and really dug the crap out of an area (?), what's to say there was an erosive condition created? Did they go back a few days later and take pictures to prove it eroded further than it's original state based solely on your initially being there?
That law is crap