Before the play, the Jets called a timeout with about 2:10 left on the clock.
It was a very stupid mistake by Mangini. He could have just let the clock run down to the two minute warning, and put his offense in a better position to win.
The Bills, on the other hand, saw this as an opportunity to pass to get the first down, and put the game away.
At the time, it seemed like a very stupid move by Mangini, and Dick Jauron thought he might put the game away, or get a big play.
Mangini also put himself in a tight position not knowing whether it would be a run or a pass.
But the real hero here is Jets' Defensive Coordinator Bob Sutton for calling a safety blitz in the situation, and of course the rest is history
Bills Quarterback J.P Losman dropped back to pass, then defensive back Abram Elam forced the fumble, and Ellis picked up the lose ball, and goes in for the touchdown.
Jauron took a lot of heat for his call to pass, but I don't think you could really blame him—it was a free play handed to him straight from Mangini.
If things were different on that play, and, say, Losman completed a 12-yard pass play, it would've been Mangini's fault for calling the timeout, and Jauron would've been a hero.
Well, there ya have it, a dumb decision by Mangini cost the Bills the game.