It's interesting to look at the connections. All this comes about because of Michael Tracey, a leftie journalism prof at CU. He has been pro-Ramsey and pro-intruder from the beginning. He's produced documentaries (some ridicule as "crockumentaries") trying to finger other suspects, which are riddled with incorrect facts and those he fingered have been shown to be innocent.
Karr happened to run into a friend of Tracey when he was "researching" the JonBenet case. Tracey struck up an e-mail correspondence with Karr that went on for years. The genesis of the DA's looking at Karr for this crime was those e-mails.
Here's the catch. Tracey had been corresponding with Karr for about two years when he produced another documentary accusing someone else of this crime. Only after his latest theory went paws up did he start grooming Karr for the perp role.
Maybe the DA has an ace in the hole, like a DNA match we don't know about. But I'd be very surprised.
You've pointed out several of my concerns about the JMK case and why I suspect the *possibility* that the DA has been had. There are just too many things about this guy that suggest fraud, for lack of a better word. OTOH, he could be our huckleberry but I'd like to see what else the DA has on him.
if that DNA does match, the chain of custody for the material - to the 2004 test where the full sample was "discovered", is going to be critical.