As of my note, the path cannot be used by quad or car.  It is possible for walkers to skirt the rim of the landslide.  I would not ride a bike past it unless on foot then the path may be a bit narrow for cyclist and bike together.  Having read your comments, I will go again to the site and recheck passability.  As you mention there are signs saying not to use the path.  Will revert later this week.
