http://rpgamer.com/news/Q4-2004/103004b.html
Please keep in mind he may still continue to do work for FF games in the future, but it's not a guarantee. Good on him for taking his leave of SE due to a busy schedule because a talent should never be abused or taken for granted, and quality should not always be 'milked for all it's worth' when a person's time and life is taken away. However, having said that, I hope he keeps working on the FF series as a contractor. If not, it's a mighty blow to the franchise.