What you're seeing is what happens when scientists are confronted by someone (in this particular case, Patrick Michaels of the [libertarian] Cato Institute, which has an ideological opposition to government regulation in general and - surprise, surprise - advocates only very limited government regulation of greenhouse gas emissions) perceived to be politically motivated against the scientists' findings. Worse than this lack of openness - which amounts to a "failure to cooperate" with the bad guy - is the fact that there's apparently also been behind-the-scenes lobbying to suppress publication of papers by those viewed as politically motivated.
I don't defend these practices (in fact, I earlier provided a link to a Washington Post editorial that raised these very points). But these problems don't amount to a global conspiracy to create a fake catastrophe. They demonstrate that climate scientists are imperfect human beings with egos, just like other scientists. Look at the decades-long controversy surrounding the full release of the dead seas scrolls. Look at Robert Gallo's behavior vis a vis the discovery of the HIV virus. Letting your ego get the better of you doesn't mean you have something to hide.