These threads are comical. The guy has devoted his entire life to playing football for the Dallas Cowboys. Something very few of us can relate to. Saying Dez struggled is one thing but saying that he's washed-up, isn't giving it his all & suggesting that he give back his salary is just plain stupid. Yes, Dez had a bad game against the Broncos. So did 90% of the team. Heck, Lee, at times, looked out of shape and was taking bad angles. Hey OP, why not start a new thread - 'Lee-thargic'?
Back to Dez...give him Emmanuel Sanders as his #2 and see what kind of a player Dez is. If he struggles, credit will be given where credit is due. If you can't run the ball, and you don't have another receiver that even remotely scares the defense, you're left with a shifted coverage with help over the top on your best WR. That's the formula for shutting down your best WR.