Re: Moral Dilemma: What would you do?
I'd cut the guy some slack for asking: remember he didn't want to come back, it was his wife who couldn't settle in the new environment. So I can see his point, but at the same time he shouldn't expect to get a "Sure mate, have it back!" from you.
Offer him the sub and leave it at that. Instrument-moving could get messy in the long run.
Just my 2c.