NASA chief Griffin regrets airing personal opinion on AGW

...but he doesn't disavow the opinion he presented. From SciTech Today, June 6 (emphasis added):

NASA administrator Michael Griffin made headlines last week when he told a National Public Radio interviewer he wasn't sure global warming was a problem. "All I can really do is apologize to all you guys ... I feel badly that I caused this amount of controversy over something like this," said Griffin.

The head of NASA told scientists and engineers that he regrets airing his personal views about global warming during a recent radio interview, according to a video of the meeting obtained by The Associated Press.

NASA administrator Michael Griffin said in the closed-door meeting Monday at the Jet Propulsion Laboratory in Pasadena that "unfortunately, this is an issue which has become far more political than technical and it would have been well for me to have stayed out of it."

Griffin recognizes why it's so hard to engage in an honest debate on this issue.