I have a degree in Forest Resource Management from U of M Missoula. I'm in the middle on this . I see the damage from too much water flow, and ATV's. I also see not much in the way of maintenance. I've worked campground maintenance and Timber Inventory for the Forest Service and got to see their methods from the inside. The way the agencies work, politics, Gov't waste, environmentalists, etc. A tough push/pull situation. Multiple use is no longer their method like it used to be because of rising population and new policies coming down out of Washington DC and the Dept. of Agriculture. Same thing with the Dept. of the Interior/BLM. Well organized special interest groups that have unlimited lobbying funds are influencing policy.
After watching the you Tube video on "Access Denied", it seems there is very little we can do to change things. Even with volunteers doing trail maintenance, it's just too large a area. I'm afraid there isn't a way to fix things except closure. Rising sales of ATV's and the fad of flying through the woods is only hastening more closures. Enjoy what you can, and respect the natural resources.