I doubt that Planewalker's legal leway with Wizards of the Coast extends to material produced by Dungeon magazine, under which the Incursion adventure would fall. This is a problem, since Planewalker's prior treatment of the adventure--it happened, but don't mention enough specifics to actually matter--may have worked, but ours will not. We actually get into specifics of the events.
Anyone better at this sort of legal stuff than I? How can we do this project without being shut down for using Pazio's adventure for our own purposes, glorious as they may be?
Could we go around them?
Maybe write up an adventure that is distinctly differant, but in the end has a similar outcome?
Then we use our adventure, which would not be the property of Dungeon.
Or this could be an amazingly bad idea.