Apple rejects PopCap's Unpleasant Horse for mature content

Apple has rejected the first game out of PopCaps' new 4th and Battery studio, Unpleasant Horse, for mature content. It's unclear exactly what content Apple objected to but apparently it involved meat grinders. According to the New York Times:

The company went public with its rejection on Twitter with a tweet that read: “WTF? Apple rejected Unpleasant Horse cuz of ‘mature content?’ We thought horses dying in meat grinders was wholesome family entertainment!” The tweet was later removed. Since then, the studio has taken a more upbeat approach saying it would appeal the ruling and resubmit with a higher rating.

Plants vs. Zombies is currently rated at 9+ and is unliving happily in the App Store. If PopCap resubmits with a higher age rating, is it possible Apple will approve Unpleasant Horse?

[NYT via TUAW]