I've noticed all sorts of things have been scheduled for 9/11 the last few years, so it seems the date itself isn't that reviled anymore. I doubt this will be too big of an issue.
Of course, some Muslims may celebrate the anniversary of that attack, wish could get lumped in with the others observing the holiday. In the end, though, even though it might cause some anger briefly, people will move on to the next big story shortly thereafter.