what I mean was that they abandoned their run game at the end, which at that time, puts them in "play to win" e.g: most teams will run the clock out on the ground, just play possession, which in the modern game, means abandoning the pass. opting not to score quickly. ...this is the reverse of SF's game, and the morons abandoned their actual winning strategy by going with "play to win," even though that isn't their game.
Sticking to their game would be the generic "play not-to-lose;" but pounding the ball is their game. I have no idea why they abandoned it at the end. It made no sense, especially as KC had shown already that Garappolo still wasn't very effective holding the ball.
So, it's like you said (bolded), which is exactly what I said. They were "playing not to lose" by adopting what is universally accepted as the "playing to win" across the NFL....because they abandoned their skillset. It made no sense.