I commented a while back on "moonwalking" (and see Ben Zimmer's key comments here.) It seems that the term has really gotten established as a (very negative) description of Bush's shuffling on Iraq. Stephanie Miller just used it on her radio show without any clear indications that it had any novelty to it.
The life cycle of negative political terms – flip-flopper, northeast/San Francisco liberal, etc. – is a curious thing, but I'm wondering if this is joining that club.