Just another devaluation of miles by broke airlines.

As far a fighting back, I doubt there is anything effective to be done, beyond a class action lawsuit which I suspect is not going to happen.

As for me, I will continue and strengthen my policy of not flying Delta and US Air, and will continue to try hard to consolidate my mile earning activities to AA and UAL. It is becoming less and less worthwhile to use a variety of airlines--if you care about FF miles.