I've seen some questionable things in my day, but there are ways of stopping a plane from leaving, all legal ways, and ways that may make you out to be the hero if you do find something wrong. sabatoge is not the prefered way, and not with a large airline. I could see a small operator trying to strong arm an engineer into signing out shoddy or unservicable aircraft just to make it to the next major inspection. I just think this guy is a lose cannon, and would never want to see him in our industry.