How can a GM undermine his HC in the middle of the season when four months earlier he brings that HC via draft, a hybrid DE/LB. a middle LB, a versatile DL and a CB, plus three linebackers (Brown, Alexander, Spikes) (Whaley failed with Blanton) in FA.
Ryan promised the owners he would give them a better defense than he inherited. Rex Ryan failed at that promise, in fact the defense got worse in his watch.