Relax, deep breaths....
Garrett WILL be gone after this season. Even if we were to scrape out a wildcard win. Jerry can't take it anymore. And he knows that fans and the media would raise insane hell and grab their pitchforks and torches if he extends Garrett.
Most probably disagree with me, but I think he goes after a top name. Someone with winning in mind. I really believe he realizes he's old and time is against him (as someone else here mentioned). Looks to me like he's desperate and damn near in panic mode to try one more time after this season.
Maybe I'm reading his reactions wrong, and maybe it's wishful thinking. But to me he looks panicked and exasperated.