<blockquote>Be very nice with Zillow and kinda casually mention that you think you might pitch TechCrunch on the idea of a story about the situation - cutting off API access and all. Remember, you're happy to sell and not mad at them, but that they might not come off looking so nice in the press at $250.</blockquote>

By posting everything about the situation on HN, isnt it possible that somebody has already caught wind of the story :).