Except the Cardinals, the remaining 3 teams the 49ers will face in Dec...are good. Heck, the Cardinals might give everything they've got esp when they have nothing to lose...similar to the Rams who tried all those trick plays in the first game.
The defense played great on Sunday, gave up maybe 5 points. The offense - enough of the trick plays, and illegal shifts and the penalties...time to play some serious football.
The 49ers are still leading the division, but if they don't start treating the next 4 games as "critical", the season will be cut short pretty soon.