The pair were performing a Salsa to We Are Family, but unfortunately one of the big moments in the routine, where Whaite was supposed to lift Radebe, went a little wrong and landed heavily.
An apologetic Radebe said that it had been his error as the pro dancer, explaining: "I gave him the wrong hand."
— BBC Strictly ✨ (@bbcstrictly) December 4, 2021
But the judges did not seem to mind too much, as they shared how funny they'd found the lift fail and said the couple had done a fantastic job anyway.
Hard-to-please judge Craig Revel Horwood smiled as he admitted: "I love it when it goes wrong."
But Revel Horwood added that he thought the former Bake Off winner was a brilliant dancer, as Motsi Mabuse, who has returned after a week off isolating when she came into contact with someone with COVID, agreed with his comments.
Laughing, she told the couple: "Like Craig I loved it, because it's just so funny."
— Ariadne 🦋 (@Ariadne_Reviews) December 4, 2021
John and Johannas are going to be in trouble I think 😮 #strictly
— Dorina 💙 (@Dorina335) December 4, 2021
John was under marked. As a celebrity to be able to adapt to being handed the wrong arm for a lift and still get Johannes up there, that’s so difficult. Anton was right, that deserved a 9, he showed how skilful he is now. #Strictly
— brianna (@iambri_97) December 4, 2021
Head judge Shirley Ballas told them she was impressed with how they'd dealt with the awkward moment.
She said: "Yes he did give you the wrong hand, but you know what, you got him up there."
As they left the ballroom to hear their scores, Whaite showed he could see the funny side too as he told host Claudia Winkleman: "He's never landed on the floor with such a thud."
Unfortunately, the stumble did affect the couple's scores a little as Anton Du Beke said: "Shame about the lift - nine!"
Tonight, the remaining five couples are dancing for a place in next weekend's semi-final and are hoping to edge one step closer to lifting the Glitterball Trophy.
Dan Walker was forced to address abuse he'd received on social media during the week after winning a place in the quarter-final.
He wrote: "Thank you to everyone who is sending lovely messages & enjoying us having fun on #Strictly and to the few who say… “Just leave” “Aren’t you ashamed?” “You’re a disgrace” “It’s a fix” (which I don’t get) or “Who is voting for them?” IT’S A TV SHOW! See you in the 1/4 finals."
Watch: John Whaite will live life by 'Johannes-isms' after Strictly