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The Patriots drove a nail in the coffin of Philly’s fading playoff hopes on Sunday.

It’s only fitting that it happened in embarrassing fashion, with the Eagles melting down on the field and off.

Comcast Sports Net and Les Bowen of the Philadelphia Daily News report that offensive coordinator Marty Morningweg and defensive line coach Jim Washburn “exchanged words” on the sideline. It’s unclear what set them off.

Meanwhile, the Eagles benched DeSean Jackson in the fourth quarter of the blowout loss. Jackson had another memorable drop against New England and was benched after that.

“DeSean has to do a better job. I wanted to give other guys a chance in fourth quarter,” coach Andy Reid said after the game.

At 4-7, the Eagles are this season’s biggest disappointment. The last five weeks of the year only figure to get uglier for Reid.

Expect to hear more chants.