My problem with the coaching argument is that I fear so many subscribe to the "FIRE HIM!!" mentality because it serves as a way for us to feel like someone had to 'pay' for the loss. In reality, I don't think we're at a stage right now where someone must 'pay.'
For me, the decision whether to keep a coach or not is all about whether you have the organizational structure in place to win. If a season-ending loss is a sign your organization is in shambles, as I feared was the case last year, I think you can the coach. But if the structure is sound, I think you keep marching forward.
It's why guys like Jeff Fisher -- despite a 15-year history of PROVING he can't win the big game -- stay employed, and justifiably so IMO. He's a good coach who happens to have not won a Super Bowl, but he gives them a fighting chance every year. Bill Cowher was the same way. I think Andy Reid is, too.
I really think Wade has brought that same sense of organizational sanity here. We're a good team that happened to lose to a better team today in a game that was a one or two-possession game for three quarters. It got out of hand late, but it'd be silly to fire our coach because of an artificially enhanced "blow out."
My two cents.