Ok Blog. I fully understand you not wanting to publish all the facts but based on what you have written here let me take one more stab at this.
Your issue is simply accessing and using your legal easement. Jerk neighbor bought his property knowing full well of the easement. Now he wants that land back and is being a prick.
This quiet title business is bad advice by people who either don’t understand the facts or are trying to take your money. QT relates to ownership of property. This has never been an issue especially as you had multiple legal descriptions recorded defining his property and the easement. Who owns what is very clear and not in dispute.
There has been a prescriptive easement as well and your paid portion and presumably other people with similar access across this land. Legally complete and all in place before jerk moved in.
I get living in the country there is a bit of the wild west mentality and you neighbor sure fits the bill. I also understand about cops tending to let you sort things by yourselves. Problem is the dude probably has guns and you are very concerned about your family safety. I would be too.
Either you move or deal with him. Again, I fully understand this is not easy but the concept is simple.
Lets deal with him. You have every right to enjoy your easement. He has harassed or otherwise interfered with your use. You have police reports, video, statements supporting this.
Instruct your atty to prepare a demand letter for him to cease and desist his interference with your easement. He must remove the fence and regrade the road back to original usable condition. Cite the past instances and include photos. Include your grand deed and other supporting docs as well as the prescriptive easement from others.
Prepare another letter to the District Atty putting them on notice of this problem and include your letter to neighbor. I would also indicate a restraining order may become necessary.
Mail it first class, certified, and fed ex. Don’t worry if he refuses or ever reads it. That you made the complete effort to communicate is what counts.
Next comes enforcement. Wear a video camera anytime you are on the easement. Call cops and have vehicles impounded if he parks in the easement. If cops don’t show, at least there is more paper trail. Finally, get DA involved and take sheriffs non-response back to the Chief.
Good Luck!!!
ps. No lawsuit is necessary. If need be, you pay to fix road and bill him. Small claims to collect that.