I think the question to the attny is simply, I got the easement and he erected a fence blocking it. Please write letter ordering him to remove it and put the roadway back in original condition. This add more paper trail for you.

Prescriptive easement is gold for you as it was in use before you or the ass moved in. I’d want an affadavid from old people ( assuming they will go soon) confirming the use of the road for x years. This kind of thing weighs heavily in your favor.

This kind of boundry dispute is really old law ( think Romans) and there is a ton of case law. From this distance, you and your neighbors have every right to the road and the ass needs to worry about not getting thrown in jail for harrassment or worse.