Cathedral forest in Oregon is one of the last stands of virgin forest remaining on the North American continent. The forest is called old growth because the trees (Douglas firs) are among the oldest and biggest on the planet. Old growth constitutes an almost infinitesimal percentage of forested lands in the United States. Even though there is no commercial demand for the timber, the U.S. forest service has made the harvesting of the last of the old trees a priority. The Forest Service has sold Cathedral Forest to Willamette Industries, a large wood-products company.
To protect the forest from being cut down, radical environmentalist Mike Roselle has resorted to an illegal guerrilla action called tree spiking. He has driven long nails into trees in a spiral pattern. Chain saws and saw blades will shatter when they hit the buried nails. Mike hopes that the spiked trees will prevent Willamette from cutting down the forest. Mike notified the loggers that the trees have been spiked to prevent unnecessary harm to the lumberjacks.
Is tree spiking morally justified or not? On what basis do you draw this conclusion? Is it consistent with the principles of Deep Ecology? Fully explain your answer. (Make sure to explicitly reference some ethical theory(s).)