I believe Rodgers has the authority to change any play at any time. We needed the time out later.
On the surface, one might think Rodgers could have audibled to something like a play action bootleg with the TEs running under/over out routes with one of the backs slipping out into whatever space he can find, along with the QB run option. But it's 8 yards to go. The DBs defending the edge can't be expected to bite on the run with that down and distance, and they're out of range for a reach block...they are where they are to defend the edge.
The only excuse for this call would be that the audible I describe, or something like it, was in fact the primary play call attempting a bit of deception, Rodgers saw it wouldn't work, did not want to risk a throw-away incompletion when they are trying to burn the clock, and audibled to the run. However, I highly doubt that.
It suddenly struck me, on this momentous day, that proclamations with trillion dollar implications can be made in a sound bite or 140 characters while it takes so, so many words here to dissect a single football play. The gap in genius must be an ocean wide, right?