From what I've heard about and out of this guys family I'm not putting much credibility into anything they are saying.
A brother who doesn't know where his brother has been, is, was etc. He's a "great" guy but a convicted pedophile. His two brides being 14 and 16 years old, the father who thought his son was dead. My god, even the best hollyweird minds couldn't come up with a soap opera crazier then this family seems to be.
I don't know if he killed her. However, I do believe he knows who did, has information on the crime being committed and may have, possibily seen evidence/photo's of the crime being committed. I have a gut instinct (which I should not have considering my prior career) that this guy is a very well know, and high placed member of one of the numerous child porn rings circling the globe. I guarantee you the JonBenet case was one of the most frequently talked about, dreamed about, and unfortunately became a huge sexual turn on for many people who are into children.
This guy is obsessed with child murder and delusional. His ex-wife said he was in Alabamba with her and their 3 children Christmas 1996. They had very little, let alone enough money for him to travel to Boulder. He was teaching and they have the school records that show he was in AL before and just after Christmas. The DNA sample will seal it shut and once again, the Boulder DA will have egg on her face. Patricia Cornwell was on GMA this morning and concurred that this is probably not the guy. She said this murder wasn't committed by a pedophile. Based on the autopsy findings, it was an act of rage. She wouldn't say who she thought did it, but by her answers you could tell she thought it was someone in the family. And I agree with her. (That child wasn't in the kitchen eating pineapple with a stranger.)