So you think one game changed Jerry's motivation to actually extend him or how/when to extend him? I agree that Dak's contract is structured with the same concepts and principles as Romo and Troy's but it seems the difference is Dak has walked a different tune. Remember Stephen once said/thought we could hear/see Dak's extension completed w/o the fanfare?
I'm not sure I agree about the GB game but we ALL can agree SOMETHING has happen from this time last season to now. There is no brown-nosing from either side. They both are trying to cover their own butts, team be damned.
But it's not one game in isolation it actually resurrected the ghosts of the 49ers loses. How many times did we hear, on here, the dismissive 'well it was the 49ers, the best team in the Conference'? Close games, that we had a chance of winning.....indeed Jerry may of deflecting the blame for those two loses on the penalties, lack of run game or to stop the run..... (all played a factor), but the stark reality is that Dak had the opportunity to win/tie both games late on.
Then link in the past struggles with 'receiver by committee' and Dak's inability to play up to his contract, upping that responsibility with lesser resources as his CAP% increases. Needing a 1st RD pick and trading another 1st Rd on Amari.
Now put the GB game in the perspective of the last off-season which for the Jones was an ALL-IN push (Gilmore and Cooks) and would presumably ellicit an improvement. That first half performance (AND SECOND HALF 'COMEBACK/IMPROVEMENT IN PLAY', WHEN PRESSURE WAS OFF) encapsulated pretty much every one of Dak's struggles. Jerry's face said it all: shock and realization that the planned strategy of improving (on the two SF games) and resulting in the MEGA EXTENSION, was a dangerous strategy AS WE JUST ARENT THAT GOOD A TEAM, exposed against good opposition.
For clarity, though, I think the 'CHANGE' (as you described it) is that Jerry has cold feet, and his faith in Dak is shaken, especially that HE needs Dak to take a career ending contract (to allow heavy restructuring), but that flies in his strong belief of 'competing every year'.
I still think Jerry will capitulate, in the end, but his like for his own is waning, especially if Dak wants a shorter contract (AND DEFINATELY IF HE WANTS A NTC).