As an old retired captain with etops and airbus type experience, I would point out that the good thing about this event is that US Air still have at least two cockpit crews who know their job and didn't take an aircraft that they considered wasn't serviceable for flight.
I wonder how far down the list of replacement crews the US management would have had to try to find out one that agreed with them and took the aircraft...and whether that crew would have made destination without a major event or diversion.
My respects to both crews who said no! I hope that there are many like them in US Air.