The family says they have pictures from the Christmas in question to prove his alibi.
Also, the father gave an interview (it's posted on FR somewhere). In the article, the father said he thought his son was dead since he hadn't heard from John since his arrest in 2001. In 2001, John told some people he'd been arrested for killing Jon Bonet.
Ah yes, the pictures will now pop up. It'll be interesting to see if they even have a date on them. As for the father, it's quite telling that he didn't even know where his son was. And the guy's brother knew absolutely NOTHING about the guy's personal life. Regardless of whether the guy killed JonBenet, and I am remaining neutral on that point, they aren't even willing to amdit to themselves that their relative is a pedophile and a creep. I would never protect an evil family member and act like they were a saint.