Hmmm. Is this guy just a 'murder junkie', memorizing information about crimes, or is his ex-wife just trying to cover up and get him off the charge. If he was in a different state altogether, surely there must be some other evidence of his not having been there. Of course, if the DNA comes back as a match for HIM, then no alibi will hold water.
yes, the DNA is the question. If it is not this guy's DNA, and no one can substantiate that he was in Boulder, then it would appear that he is just a nutbag.