If you bothered to read what I actually wrote here and and here, you'd see that I never suggested that. What I theorized is little different than what post #114, and post #173 have also suggested. Karr may prove to be a crackpot, and I'd still hold to my theory.
For what it's worth, I think that Karr is an Aids addled, 24 carat fraud. I will be stunned if the dna matches. But, I still firmly believe this was a brutal, horrific sexual homicide that the Ramsey family had absolutely NOTHING to do with.