Michael Arrington at TechCrunch let a cat out of MySpace's bag a little early, revealing that the company would announce the departure of co-president Jason Hirschhorn tomorrow. A representative for MySpace just sent us the following statement from News Corp. Chief Digital Officer Jon Miller on the matter: We fully respect Jasons decision to leave and his personal desire to return to New York. As many people know, Jason is like family to me, and as expected,