I guess it was bound to happen. The minute you take your eye off the ball, you screw up. After 4 yrs. with the 5'r, the first time I ever failed to do the pull test, I dropped her on the box. Fortu...
I had a variation of the brain lapse. I was unhitching last year at home and didn't put the landing gear all the way down yet. I needed to do something so I stopped the gear and reached over the side of the truck. While I was there, I instinctively pulled the release handle. The 5er rolled back slightly and landed on the truck. No damage but it could have been much worse. I agree with all those that say to focus on your task and not to let anyone or anything interrupt your routine.