The Cowboys fired a cutting-edge defensive coordinator in Rob Ryan over philosophical differences. Ryan's unorthodox methods often left the players confused and out of position.
The hiring of the Monte Kiffin, 72, is an effort by the Cowboys to move away from exotic looks and two-man pass rushes and get back to basic, sound defense.
But in doing so, did they swing the pendulum too far the other way?
Take a look around the NFL. The times they are a changing.
The latest change came Wednesday when the Eagles hired Oregon's Chip Kelly to be their head coach. Kelly's Oregon offense was a trend-setter in the development of spread-option attacks, and it's a trend that has taken root in the NFL.
Just last weekend, 49ers quarterback Colin Kaepernick ran past the Packers' defense using a Pistol offense developed at his alma mater, Nevada.
Kaepernick's performance sent shivers down the backs of defensive coordinators around the league. The era of the running quart...