I had heard an old story of a interior people working a A302 while pressurized and opening a door, supposedly it was blown off it's hinges and took the interior tech with it. Regardless never try to hold on to an airbus door if you accidentally blow it, you will not stop it and you will probably go for a ride, it has happened.
Another reason why line techs should be allowed to carry knives, I knew of a guy who had several ribs broken on a 744, somehow during a slide change the slide discharged inside the aircraft pinning him against a galley until the guy working with him could slash enough air out of the slide with a leatherman.