Complex sentence: In 2008, with Vonage stock at $1.42, Citron stepped aside as Marc Lefar, former CMO of Cingular Wireless, became CEO based on his performance in multiplying customer base and reducing churn rate.
Split into simpler sentences: In 2008, with Vonage stock at $1.42, Citron stepped aside as Marc Lefar, former CMO of Cingular Wireless, became CEO. Lefar was chosen based on his performance in multiplying customer base and reducing churn rate.