It's funny how everyone stands behind Stop the Whipsaw but then as soon as there's a flowthrough to Delta everyone jumps on board. If I were CEO I'd probably be whipsawing the regionals too since all of their pilots seem so willing to go for any carrot dangled.
This is only going to prove to other regional carriers that groups are willing to take concessionary contracts as long as you announce bad flow through agreements to go along with them. Get ready for more of this in the future.