The following is my opinion and experience..
Thing about a running game is that it starts with a focus that we are going to run the ball.. from the coaches first.
To run the ball effectively you have to commit to the run and want to run the ball.
For the Packers.. that started the week after the Lions loss. I think it was hammered home when we got destroyed by the Lions front four and the Packers QB's were getting banged around.
Things had to change.. and go back an look at Campen's comments that day after.. the offensive line was going to get "tuned" up and they were going to have to run the ball with Flynn in the backfield to assist him along.
And they learned something.. that running the ball is possible with this group and it would do nothing but assist in the passing game. Flynn putting numbers up against the Pats was proof of it.. we played a complete game.. and it would only be more explosive with Rodgers at the helm.
Effective running does so much for protection and setting the defense up for play action and opening up the route trees for the receivers. And the myth is effective running doesn't have to an explosive run game.. just has to establish a couple of yards and set the defenses up in either or calls.. keeps them off balance.
We helped the offensive line by running the rock at them throughout the game.. not staggering numbers but enough that they had to watch for the run.. and a couple of screens to boot.
That element slows a pass rush down and makes the backers / safeties hold a bit and opens up our bread and butter routes.. quick short slants, curls and digs.. giving Rodgers options quick and fast.. and if he likes something in the coverage.. wait for it to open.
Now you have the defense.. stretched.. they have to watch for the run, pauses the rush, holds the backers for a moment and puts edge pressure on the secondary in coverage.
Nelson's TD was a perfect example.. they bit on the run for a split second.. gave Nelson the angle and ripped that two deep apart.. helped by poor angles from their deep personnel.
IMO.. the Lions loss and the loss of Rodgers for a game has become the turning point for the season.. "saved our season" by forcing the staff to pay attention to the run and making this passing game even more explosive.
"The oranges are dry; the apples are mealy; and the papayas... I don't know what's going on with the papayas!"