As a long time homeowner and longtime adult living in a variety of homes, I am willing to bet that this handle was loose and needed to be tightened or replaced ANYWAY. No way does a properly attached handle just come off because the door was yanked a bit firmly. I'm just not buying it.

So consider it a cost of owning a home: Making a repair/replacement because something FINALLY broke and it's just the fedex guy's dumb luck that it was him. If I visited your home and the handle just came off in my hand simply for trying to open a door, I'd not replace it -- it'd be on YOU.