I think Cryptkeeper has scored a resounding DH on the issues. Although a crab, I've worked closely with Corps over the past few years. The flying pay scandal has rocked morale; the guys simply feel that they've been hung out to dry by senior "leaders". Many have jumped into the buoyant offshore world to beat the rush when the SAR crews that don't get SAR jobs go looking.
IMHO they're also shagged out having been hard wired to "surge" on an enduring basis for the past 8 years - more so (I think) than any other force.
The guys have dug out in Afghan and the endless cycle of PDT - the loyalty they should expect in return is lacking. Is it any surprise they're hacked off and leaving?