Very sorry, but it's all I have. I can speculate with the best of you, but thought that a diversion for 100's of miles in the opposite direction ignoring intermediate airports was unusual enough that someone here might know about it. Cannot see that the cost and hassle of finding overnight hotels for a whole flight of passengers, plus the fuel costs for going 100's of miles in the wrong destination, would be worth a diversion for just operational needs. Hijacking, anyone?