i had the same thing happen to me last year Alan, on the ground getting ready for a flight. I like your fix but, my soldering skills pale in comparison to yours, I destroyed the "bad" wire/connector while practicing on it and decided not to attempt it on a good wire. Instead, I used a rubberized paint ( of the type that you dip tool handles in) to stress relieve the connector to the wire.

No problem since but, that may just be dumb luck

Mike