Probably not, but the singer's appearance did have us all guessing, as usually eliminated contestants don't come back to perform until the final...
Arriving at the Fountain Studios in London, Mason joined his fellow X Factor stars Louisa Johnson, Lauren Murray, Reggie 'N' Bollie and Che Chesterman.
He like, Che, had been mentored by Nick Grimshaw on the show, so perhaps he returned to give the boys a motivational boost ahead of the semi-finals.
It wouldn't be the first time that Mason has made a comeback, though, as he bagged himself a spot at Judges' Houses despite quitting the show during his Six Chair Challenge. Following his performance, Mason complained about his airtime, leading Simon Cowell to call him an "a*sehole."
He told Mason if he didn't like it, he should leave and the star did just that, dropping his mic on stage as he stormed out. Still, he got a second chance to redeem himself after Tom Bleesby surprised fans by quitting the show and Mason went on to reach week four in the live finals.
On his exit, Mason said he was "relieved" to have been voted out and has already unveiled an original song, 'Boyfriend', for fans to hear. And we think it's pretty good!
What do you think?
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