My questions to Mark Wood:
1. I understand the fact that Sharon and I want to do trailwork independently of the NSMBA without your permission enrages you. Why do you feel you have authority over Sharon or myself?
2. I understand the fact that Sharon and Wade want to continue putting out the MTB Trails map book without asking for any input from you enrages you. Why do you feel you have authority over MTBTrails?
3. I understand the fact that Sharon and James want to use their money to pay other people to do trailwork in land where the NSMBA has no jurisdiction enrages you. Why do you feel you have authority over Sharon/James?
4. I understand the fact that you have no authority over Sharon and I enrages you. Would it not be better for all concerned (including your state of mind) if you just agreed to leave Sharon and I alone given that what we do is none of your business?
Jesus man, read between the lines. This isn't rocket science. You can figure out the answers to most of these with a basic understanding of human behavior. I've barely ever spoken to Mark, and in no way speak for him, but I would guess:
1) Building trails on the shore is Mark's livelihood and passion. He has an overall plan for things, and having another party building trails in the same area means trails get built that don;t fit with that plan. Should Mark have the authority to insist that his plan be the only plan for the shore? No, but so long as you both keep on behaving like babies and not speaking to each other so things will continue. To this end, your proposed solution of 'leaving each other alone' wont work.
2) Meh. No comment here.
3) See 1) above.
4) Again, see 1) above.
Having groups working in isolation without talking to each other is in nobodies interest. I have no doubt that you two are way past the point of no return, but surely you have to see that the right way to go about this would be for both groups to collaborate and come up with a plan they all agree on and can work towards?