The luck must have been on the engineers side many years ago when a simular incident occured on the Britannia (the whispering giant)
He was under the nose when the gear retracted, but the fin on its way up hit the ceiling (of BOAC's new wing hangars) and arrested the descent of the nose inches above the engineer.
In aviation every new generation makes the same mistakes. Every new manager finds new ways of reducing safety and saving money.
There should only be one set of gear pins. They should be stowed on the aircraft, and when needed used correctly. No engineer/ towtruck driver should be allowed "his own set".
There is absolutely no point in the flight deck checking the "pins are on board" if some other set is fitted below!
End of sermon...