I can't see how this happens? Mine is manual, so I have to pull it. But after I hook, if the lever popped back in, and the flapper dropped to block the lever being able to move. Then its locked, and it aint coming off. So I don't even get off the truck. I just hop on the step and look to see if that flap is down and lever in. Done deal. Now if yours is automatic, and your not checking. Then your a rooky idiot. And I would fire you instantly. If you dropped a trailer, you didn't do you job. Your fired.