The most upsetting thing to me about it is, not its validity as a philosophy, but rather it's a lie. He is just covering his ass trying to take credit (which he deserves as hc) for the only bright spot on the team.
If Marrone was so I vilbed with the defense first, why are the last 2 years philosophies so different?
Just trying I save face, and take the distraction at how bad his personally coached OL and offense are.