There are bad losses, and the Jets have had some of those in this horrid season. There are ugly losses, and the Jets have had some of those, too. Then there are pathetic losses, the kind that gets coaches — and, others, perhaps — fired, and that is what the Jets absorbed on Monday night.  The Jets looked unprepared and overwhelmed in losing, 38-3, to the Buffalo Bills, who lost two full days of practice after record snowfall pummeled western New York last week and entered the game having not scored a touchdown on their previous 21 possessions.  The Jets lost to a team that destroyed them by 20 points four weeks ago, a debacle that prompted Coach Rex Ryan to say last week that they had improved “in a zillion ways — almost every way” since then. The Jets lost to a team that recorded seven sacks, blocked a punt, scored five touchdowns and outplayed them in every possible way.  Whatever shred of dignity they had reclaimed by defeating Pittsburgh two weeks ago has evaporated. Whatever hope the players felt they had of saving Ryan’s job, shown by publicly expressing their support of him — that, too, seems a delusion.  The reckoning will come soon — maybe not Tuesday, as perhaps some fans would prefer; and maybe not this week, but it will come; it has to. By now, the Jets’ owner, Woody Johnson, has no choice.  However much he likes Ryan, he also expected the Jets to contend. He also expected a far better showing Monday night — or, at least, not a humiliating one — considering the circumstances.  “No excuses,” Ryan said last week. “Here we come.”  The Jets went three-and-out on their first possession, they allowed a touchdown on Buffalo’s first series, and it was 14-3 at halftime, 31-3 after three quarters — and it was a marvel that they could even kick the ball through the uprights. Against the Jets, the Bills have averaged 40.5 points. In their other nine games, they have averaged 17.6.  For three straight years, the Jets have been blown out after their bye week, losing by an average of 26.3 points. Four straight years, they have missed the playoffs. In spirit and in potential impact, this loss evokes another Monday night fiasco that eliminated them from postseason contention, their defeat in Tennessee in December 2012.  Mark Sanchez was benched, and two weeks later, General Manager Mike Tannenbaum was fired. His replacement, John Idzik, cleared much-needed salary-cap space and made some smart moves, like drafting Sheldon Richardson, trading for Chris Ivory and signing Eric Decker. He has also mismanaged the cornerback position and failed to provide reliable depth at receiver, and early returns on his drafts are poor.  It would seem rash for Johnson to fire Idzik, who sold him on a plan for long-term success — one that apparently fails to account for a woeful present — and accepted the job under the condition that he could not hire his own coach, that he must retain Ryan. But change is coming, make no mistake, and no one — not Ryan, not Idzik, not anyone on their roster — is safe.  A version of this article appears in print on November 25, 2014, on page B9 of the New York edition with the headline: Jets Plunge to New Depths, Where Ryan Is Unlikely to Survive. Order Reprints| Today's Paper|Subscribe
After the Jets’ latest embarrassing loss, to the Buffalo Bills, very few people in the organization have job security, least of all Ryan.