The other day I tried to ride around the "open land" trail that seemed to be there a couple months ago. I think this is what you guys are talking about opening up.
It seems like not only is it overgrown, but it's very rutted from erosion. Would it make sense to use some sort of mini-excavator or small dozer to grade and remove weeds at the same time? I'm not sure how it was built in the first place, but the same equipment would do the job quite quickly, I'm sure.