McDermott is already working on his plan B, he's known as early as last year after the Peterman debacle that he's in over his head as a HC, he's putting all his eggs into his defensive basket in the hopes of fielding a top 5 D that will get him another DC job and he'll be able to draw fat NFL pay checks for another 3-5 years.
Yes I wear a tin foil hat, buts that's just between me and the aliens, but I'm convinced of McDerotts plan!