Just a thought...
Anybody worried about the Cease and Desist letter affecting the release of root mods or the update.zip for the D1, I don't think should have to worry.
Moto specifically licenses and develops Motoblur and therefore have control over it's release and exposure. Since the Droid X runs Motoblur, and the released update.zip included that, they would then have the right to request removal of the file from hosting sites.
Since D1 is stock, aside from driver support I guess, I don't think they would be the ones to to try to push the C&D. And I think Google is just fine with it.
My two cents.