As much as I get a grin out of the situation, I think it's mostly a matter of bad luck. The 762 can probably do this flight more than 97% of the time, however they decided to inagurate it during the 3% of bad headwind weather. Last week I had a SEA-HNL flight that blocked over 7 hours - normally about 5.5. Those same days Alaska had to send all their Hawaii-bound flights from SEA and PDX through OAK for fuel & a shorter trans-Pac route. Sometimes the dice just get rolled against you.
Oh, and I remember Parker & McClelland telling us (when I was there) around mid-2005 that the transcons were being cut because we couldn't compete with the fares offered by the big boys - UA, AA, DL, and the up-and-comer JetBlue. I also remember barely squeaking into SFO from BOS in a 319 on bare-minimum fuel because the dispatchers $crewed the pooch on the forecast winds. I guess some things never change at good-'ol USAirways!
HAL