Powerline has had two interesting articles on this subject yesterday and today.
http://www.powerlineblog.com/
They conclude that these scientists have been caught up in the politics of global warming. This has caused them to cover up conflicting findings and cherry pick. Very human of them and no one should be surprised. They do seem to still believe their cause is right and urgent so this isn't just a case of them protecting their cash cow.
More concerning is the accepted research based on tree ring data. In this case the scientist allegedly cherry picked his data. But of greater concern is that the global warming community relies on such data at all. It sounds like they use it in a lot of their studies. The problem is that heat units play only a small role in the growth of a tree in the wild. No one could use tree rings to determine temperature outside of a controlled environment where all other factors could be monitored.