Now that I've also carefully watched the video clip, I'd agree that I'd be quite surprised if I saw it on broadcast television. The camera was certainly lingering on her. And it's not just ass: there's a generous portion of side-boob, and at 0:19 we can see enough mound to know that she keeps herself well-shaved! Of course, I've never watched NYPD Blue, so that could be part of it.
And remember the rule: naked women are sexy, naked men are funny. That's why there were no fined for Franz's ass.
And that kid's ears are way too big!
EDIT: For clarification, I don't have a problem with nudity. However, based on the currently written regulations, I believe that this is a violation.