The best short form critique of this announcement I have seen is the post by theoretical physicist Matthew Buckley on the metafilter website:
After I read that comment I clicked through to his personal website and I found a nifty layman's explanation of the necessity for Dark Matter in current cosmo theoy:
Matt's web essay on dark matter.
If you don't have time to read his comment, what he says is that the results are not obviously bogus but they are so far-fetched that almost no physicists will find their daily work affected by the provisionally conceivable status of these results until a huge amount of double- triple- quadruple- and quintuple checking verifies them.
http://www.nature.com/news/2011/110922/full/news.2011.554.html
http://arxiv.org/abs/1109.4897v1
http://usersguidetotheuniverse.com/?p=2169
http://news.ycombinator.com/item?id=3027056
Perhaps the end of the era of the light cone and beginning of the era of the neutrino cone? I'd be curious to see your probability estimates for whether this theory pans out. Or other crackpot hypotheses to explain the results.