You had to "virtually tie him down, deleting File Manager, to get him to become productive with Explorer." If a person does not wish to change, then that decision lies solely with the person not desiring to change. Change has to come from within the person. I oft remember this maxim, 'a man convinced against his will is of the same opinion still.' Many times, I would go against the flow, sit, when people stood, stand when people stood...and when I was forced to comply, inside I was still doing the opposite.
The most you can hope to do in life, is to show the horse the water, if the horse chooses not to drink, then so be it. Brush the dust from your sandals, and move on.
People change at their pace at there hearts desire and not because they are 'forced'.
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