McIntyre's work since last week, reported on his web site, indicates that Briffa's work only chose tree ring data which supported their hypothesis of unprecedented climate change. They excluded tree ring data that did not tell the story they wanted told. The IPPC's case for anthropogenetic climaate change rests firmly on this hypothesis.
If this were science, the hypothesis would be declared "not proven".
I hope this will cause widespread debate in the world. Trouble should be brewing. I fear it isn't.
Hat-tip to my friend the professor on this!
Update 1 Oct: See the well-written article at http://www.theregister.co.uk/2009/09/29/yamal_scandal/print.html.