On the other hand, the ISU knows who the judges are, even if we don't. If it is really true that a particular judge is picking on Virtue and Moir over and over, it seems like David Dore could raise some sand about it.
Your understating is incorrect. The judges' identity will only be revealed during a review process and even then, only on a need to know basis. For example, Cinquanta has no more idea who are the judges behind the marks at GPF given to C/L than you do. He cannot know and will not know. This is called information firewall, with good reason. Unless a judge has been "reviewed" and even then, only the people reviewing would know. After the review, there is a report filed but if there is nothing wrong or if the explanations have been satisfactory, no further action is taken.
For the sake of argument however, let's say David Dore somehow know who continuously low ball V/M because he is telepathic, if the judges' action are not reviewable as per the criteria you already stated, there is nothing he can do about it. Understand some suspicions are simply not actionable. And if it really were an American judge who were doing it, then reprimand this person through Dore's influences would set a chilling precedent. Not only that's undue influences, it also raises serious question about the power play within ISU and makes you wonder what this sort of witch hunt will target next time. In any event, the United States has a lot more than just one Ice Dance qualified judge. You remove this person, the USFS will easily find another who is just as amenable to their instructions. So the whole idea of Dore going after a suspicious judge from a major Fed is pointless, completely.