One aspect of CRM is applying counter measures to poor decisions made by the PIC. CRM should not be regarded as the primary decision making process. In this case anyway the CRM process they used was way too late and its application may not have saved them (and thereby a failure). Decisions will every time.
What, even wrong decisions??
I've never met a faultless aircraft commander yet! Some come pretty close, but good CRM goes a hell of a long way to counter those imperfections, big or small.......