i talked to my 'source' at VR, and this is what he told me actually happened and why Callahan took responsibility for the play call (for those of you who are wondering, this was not the janitor or the liquor store clerk so i am less certain that this is exactly what happened, but likely close enough that you can take it to the bank)
after the GB debacle
Act 1 scene 1:
[Jerry walks into Jason Garrett's office
Garrett, like any diligent HC, is busy with his stack, spit, stack routine trying to figure out why the cowboys lost the GB game]
Jerry: Jason, uuhhhmmmm, uumm, lip smack. there is a lot of hue and cry about the lack of runs at the end of the game. ummuummmm, your best efforts at distraction and even throwing romo under the bus did not work. uummm uuuhhh, i think you will have to take responsibility
Jason: [turns away from the 'process' of 'stacking' boxes in shock] err, jerry, i am surprised by that. i was sure it would work. what about blaming it on kiffin? we could say that football is a team game?
[Jason back to stacking boxes]
Jerry (irritated): uuhhh, jason, stop the stacking for a second and listen to me [lip smack]. kiffin is the DC and we are talking about the offense. arent you supposed to have some experience in that area? i know that even we dont think you actually know what you are doing, but this is the public we are talking about. we can fool them for only so long. some of them might actually be paying attention.
Jason: [stops stacking, spits, spits again] good point jerry , why cant we just say that we will look at tape and get better every day?
Jerry: uummm, uuhhh isnt that romo's usual line? i think he already used it
Jason: [spitting] Well, i guess it sounds like callahan will have to take responsibility because i am pretty sure we wrote in his contract that he would have to take responsibility for any bad news that comes out
Jerry: we did? and he agreed to it? that stephen, i knew i kept him around for something uummm, lip smack
Jason goes back to the tried and tested stack, spit, stack ritual in preparation for the upcoming Commanders game
Act 1 scene 2:
Jerry: Judy [secretary] can you ask Bill Callahan to come to my office? Yes, yes, the person who uses the little boys chair in the ofice marked "Offensive co-ordinator", that Callahan.