The Jets don't have to "collapse", so to speak.
They play New England next, so a loss there would not be a big surprise. If the Bills win next week at San Fran, then Week 17 should be a blast.
The Jets would have huge pressure on them to get a win to make the playoffs, while the Bills would need to beat Pittsburgh (obviously). The Jets would be playing at St. Louis, which is not great news, but a desperate Rams team might surprise us.