Lord Valdor must either legally free the elves, or if there are legal issues with that, find a way to fake it (a fake that can last at least a couple days). He must do it discreetly. After that is done, we'll announce our leaving, staging it so everyone knows. Then we'll return to Orussus.
If we're right about the elves and Garza, we'll probably be attacked in our way. Then we just have to take a prisoner and make him spill the beans. If not, well, then the elves will be free, something that Oirhandir won't complain about.
There's the possibility that we end with not-quite-free elves (if the freedom thing was a fake) on the run. Nodis won't sweat over that -the dangers of having a Chaotic Neutral guy making the plans-