Shatner - 7:13 am on Jul 12, 2011 (gmt 0)
I think the wisest course right now, if you've been Pandalized, is to assume it is permanent and move on.
There are examples of sites which have recovered, however they are few and seem to be in specific niches. If you haven't recovered by now, and you've made changes, there's probably no reason to think you ever will.
Assume your pandalization is permanent and move on.