I support ranching in West Marin and believe we can work together to restore the land using permaculture and biodynamic farming methods. There has to be balance. This issue needs more research. Process is ongoing. That said, I do understand the motivation for the lawsuit. The Park needs a Ranch management plan in place.
It is a sad statement that concerned citizens have to file a lawsuit to raise awareness on this issue.
http://www.wsj.com/articles/ranching-at-california-seashore-comes-under-fire-1458156431