Complex sentence: Taibbi left the "New York Press" in August 2005, shortly after his editor Jeff Koyen was forced to quit over issues raised by Taibbi's column "The 52 Funniest Things About The Upcoming Death of The Pope".
Split into simpler sentences: Taibbi left the "New York Press" in August 2005. It was shortly after his editor Jeff Koyen was forced out over issues raised by Taibbi's column, "The 52 Funniest Things About The Upcoming Death of The Pope".