But now the "Jesus Take the Wheel" singer is hitting back (actually, turning the other cheek) with a dose of snark.
She took to Twitter late yesterday to preach to the unholy masses sending her social media hateraid:
Previously, immediately following the performance on Thursday, she tweeted:
"Glory to God tonight...I couldn't be more proud. What a tough thing to pull off and we did it! I am so blessed!!!"
Clearly a lot has changed for Carrie since then.
Namely, everyone from the great grandson of the real Maria von Trapp to the actresses who played Liesl and Gretl in the 1965 film decided to publicly voice their (serious) distaste for the country crooner's performance.
However, bad acting or not, it looks like Underwood will have the last laugh considering the show garnered the best ratings for NBC since the ER finale back in 2009.
And that was back when people still watched live TV.
But we do wish Carrie could have had some more bite in her comeback. We get that she's going the pacifist, pious route, but does this mean "Before He Cheats" was all just a big tease.
Not cool, Carrie. Not cool.