The Mike Shanahan Era ended weeks ago in Washington when the first reports surfaced of a rift between him and owner Dan Snyder. The rift was apparently over Robert Griffin III, the franchise quarterback, and there was no way that the coach could survive being on opposite sides of the owner over that.
Maybe it was never meant to last anyway. They are two high-profile NFL people with major personalities and an apparent need for control. Things sure looked rosy in 2012 when they won a division championship, though we later learned that the seams were popping, even then.