Dermot O'Leary first announced that Festa, FYD and Katie Waissel had finished as the bottom three, before revealing that as the act with the lowest amount of votes, Festa would be immediately sent home.
The contestant, who performed Lady GaGa's 'Just Dance', on yesterday's show, was stunned into silence after hearing the result, commenting to O'Leary that he felt "like crap".
Festa's mentor Dannii Minogue also had difficulty summing up the loss of her first act, eventually noting: "It's so hard to stand out with 16 acts on the first show. I thought Nicolo sang fantastically."
Following Festa's elimination, FYD sang Rihanna's 'Please Don't Stop The Music' and Waissel covered 'Don't Let Me Down' by The Beatles in one last attempt to impress the judges.
Simon Cowell first questioned why Waissel hadn't sung her survival song yesterday before voting to save his own act FYD. Cheryl Cole also saved her act Waissel, but added that it was "not just a biased decision".
Minogue then decided to vote out FYD and Louis Walsh toyed with sending the vote to deadlock, before opting to "do the right thing" and casting the deciding vote that sent the boyband home.
The decision made, FYD accepted that viewers may have been too distracted by their dancing to appreciate their vocal abilities and insisted that they would be staying together.
Following the double elimination, Cole and Walsh are the only judges with all their acts left in the competition, while Walsh is the only mentor not to have an act finish in the bottom three.
The X Factor continues next Saturday at 7.30pm on ITV1.