The 'Good Morning Britain' presenter had struggled to impress the judges on Saturday, and ended up joint bottom of the leaderboard with Simon Rimmer.
After both couples had danced again, they had done all they could to earn their place in Week Five.
Giving the reasons for his choice, Craig Revel Horwood said: "I'd like to save the couple that I thought danced the best and who fixed a problem with a foot on the floor".
After conquering his motion sickness for last night's performance, Davood and his partner Nadiya were the first to be told that they would be facing the dance-off.
Head judge Shirley Ballas then confirmed that she agreed with the decision.
"Charlotte's in the dance off yess!"
"I've had an awesome time, such an wonderful time, it's been brilliant from start to finish, it really has been", she said.
We'll miss you Charlotte, you've done West Sussex proud.
"A big thank you to everyone that voted, I had so much support from friends, colleagues, online, it's been incredible and I loved the chance to come out here and dance".
But instead of correcting her mistake, she simply ignored it and carried on with her assessment, saying: 'We had nine sets of eight before we got started which I can't criticise other people for and not criticise you.
There are now 12 couples left in the competition.
It might only be week four - but it's never too early for a little bit of Strictly Come Dancing drama. She mistakengly called Holby City star Chizzy Akudolu "Lizzy" on Strictly's opening show. The dancer then welcomed her first child with her husband, Vincent Kavanagh, in July 2017.