I recently wrote a three-part series on reluctant new managers. One cause of reluctance that I wrote about was due to a fear of losing control (which often leads to a reluctance to delegate, hand over responsibilities, etc.).
I recently came across an article called When Teams Work Best by Frank LaFasto and Carl Larson and within their article they deal with a similar issue head on. And I quote: "The best way to manage your personal control needs as team leader is to demonstrate behaviors that share control.