And then some.
York took to Twitter in the last moments of the blowout loss, which was aired on national television from the $1.2 billion Levi's Stadium.
Thank you #49ersfaithful for coming out strong tonight. This performance wasn't acceptable. I apologize for that— Jed York (@JedYork) November 28, 2014
Coach Jim Harbaugh was asked his reaction.
"I don't know about tweets," Harbaugh said.
"We will do what we have to do as a football team. Set our jaw to doing that."
York's social media critique did not ruffle any feathers in the 49ers' locker room.
"It's not acceptable," Niners quarterback Colin Kaepernick said of the team's play.
Kaepernick's 36.7 passer rating was a season low, and the only one lower in his career was the 20.1 he had at Seattle in Week 2 last season.
"We didn't play well, we didn't perform well," he said. "We have a much higher standard for ourselves."
The 49ers were last held without a touchdown by the Carolina Panthers in a 10-9 defeat on Oct. 13, 2013, and the last time they scored three points came in the 29-3 loss at Seattle in last year's aforementioned Week 2 defeat.
Niners tight end Vernon Davis, who caught two passes for 13 yards, did not flinch when told of York's Tweet.
"If he said that, then I guess it was, I guess it was unacceptable," Davis said. "We all hold ourselves accountable around here. We're all in it together -- the owners, the coaches, the players. We're all in it together. We can play better than that -- we know it. Everyone knows it. But we didn't go out there and do it today.
"It was unacceptable, by all of us. So we have to get back and put it all together, stay together as a team, as one, and just stay positive."
As if there weren't already enough humiliating elements to the lopsided loss for the 49ers, Cassie Baalke, daughter of general manager Trent Baalke, called for offensive coordinator Greg Roman's ouster via Twitter on Thursday night.
The post was quickly deleted, and later the account was close altogether.
Trent Baalke issued a statement Friday saying he and Cassie had apologized to Roman.
"My daughter and I both regret that her feelings got the best of her after last night's game and that she chose social media as an avenue to express her feelings. We have apologized to Greg for this unfortunate matter,'' Baalke said. "While disappointed, as a father I will use this as a teachable moment to help my daughter grow.''
Information from The Associated Press was used in this report.