You could blame injuries if you wanted, best defensive player out. Shields hurt early in the (he's not Deion Sanders but he his to that shitty Packer de.)
I don't blame the loss on injuries. I'd have to see it on TV to make a better assessment. From my observations from 37 rows up in the corner of the field that had the least action, Rodgers looked tentative and appeared to miss open receivers and by the time he got to them then were covered and he was wrapped. Aaron likes to hold the ball, hearts it because he's gay of course. I personally would have conceded a TD to the 49ers even when they were 20 yards out. I'd take the odds of driving for a gave tying touchdown with over a minute left than hoping the 49ers miss a chip shot FG with no time left. Personal preference, could be argued either way. In reality it appears Kaepernick just beats the Packers. They can't stop that asshole.
So no injury excuse as the main blame for the loss. They had home field (with technically a new Packer Playoff record for attendence), "Packer weather" (becoming a myth), a healthy Rodgers, pretty much healthy offense all around. And their usual sucky defense (without Matthews and Sheilds) but let's be honest, the Packers de usually sucks regardless of who is in there.
49ers just came in and beat them. They could have buried them in the 1st quarter the way it started.
But in the end, the Packers beat the Bears and won the North, so I will smile about that this offseason instead of the 49ers loss.