It is reasonable for the proponents of climate change to point out that unethical practices don't invalidate the theory itself. Some of the world's greatest scientists have been gits of the highest order yet their work remains valuable, the feud between Isaac Newton and Gottifried Liebnitz doesn't show either man in a positive light even though they were both incredible polymaths. The Piltdown man hoax does not disprove evolution
AGW advocates George Monbiot in the Guardian and Eugene Robinson in the Washington Post have both robustly defended the theory of manmade warming without soft peddling the serious issues raised by the emails, Robinson writes:
From my reading, the most damning e-mails are those in which scientists seem to be trying to squelch dissent from climate change orthodoxy -- threatening to withhold papers from journals if they publish the work of naysayers, vowing to keep skeptical research out of the official U.N.-sponsored report on climate change.
Which is exactly right. Unfortunately most of the AGW advocates have twisted themselves in knots to defend, contextualise and explain away the behaviour of the CRU scientists.