He certainly makes his position quite clear.

the money flood has become the raison d’être of much physics research, the vital sustenance of much more, and it provides the support for untold numbers of professional jobs
One of the outstanding marks of (in)distinction in the Statement was the poison word incontrovertible, which describes few items in physics, certainly not this one.
Some have held that the physicists of today are not as smart as they used to be, but I don’t think that is an issue. I think it is the money, exactly what Eisenhower warned about a half-century ago. There are indeed trillions of dollars involved, to say nothing of the fame and glory (and frequent trips to exotic islands) that go with being a member of the club.
Quotes lifted from resignation letter.
In the end, aside from the legitimate concerns over just what
is happening to the climate - and environment in general - this whole thing (in my view) was always about money and the acquisition of power and influence.
Prophetic words from then President D D Eisenhower, perhaps just as relevant now than then.

Worth sticking with to the end.
[media]http://www.youtube.com/watch?v=dpaxv4u-Ur8[/media]
[media]http://www.youtube.com/watch?v=7hlaWebeIi8&feature=related[/media]