The Boyzone singer finished bottom of the judges' scoreboard yesterday, totalling only 13.5 points for his routine with Melanie Lambert. Graham, who injured himself during final rehearsals, was only saved from the skate-off by the public vote.
Speaking about the singer's performance on the show, Atack told This Morning: "I think he'll come back fighting. He's a strong bloke. I can’t believe he even got through his performance.
"I thought his performance was still really good. If that was me... I'd have crumbled."
Dancing On Ice continues this Sunday at 7.15pm on ITV1.