What's The Deal With?

So this video of Chris Klein auditioning for Mama Mia has been making the rounds, and after watching it once it seemed pretty obvious it was a fake, and a pretty good one. But then I read that no one from Klein's camp would discuss the footage, and that Universal had removed the clip from youtube, and then today I saw the actual scene from the movie , and now I don't know what to believe. I could absolutely see the Chris Klein from that audition tape dancing around wearing flippers and doing hand stands, and it's not like the guy they actually cast can sing either. So I pose it to you: what's the deal with Chris Klein's audition tape?