what a stupid thing to do

The mistake he made was putting the nut back in the same place. You can do what he attempted, but once the nut is removed, you must tighten it a little past where it was in order to put a little preload on the old crush sleeve again, or it will loosen back up as yours did. I have done lots of them like that and never had a problem.

Although it is better to use a new crush sleeve or an eliminator......but it CAN be done like he was trying to do.