Damn, that one piece of information was all you needed!
If he wants to retire, he'll retire, and you won't see him in front of the 7-11 asking for change in a coffee cup to pay for it. (Update - or starting a go fund me.) He probably won't want to retire... it is hard to envision him voluntarily saying no to whatever is symbolic of training to him. That yoga trollop on the screen says "Namaste" Tom Brady does not say "Namaste on the couch." Not after a year when he is still leading the league in anything, and it's not like he was in decline.
Every big game's going to be emotional for him at this point, not that it wasn't before... but as with anything, who freakin knows.