Complex sentence: However, in week 4 of the 2010 season, the New Orleans Saints resigned 46-year-old kicker John Carney and released Carney in October 2010, thereby relinquishing the status of oldest active player back in the league back to Turk.
Split into simpler sentences: However, in week 4 of the 2010 season, the New Orleans Saints resigned 46-year-old kicker John Carney. He became the oldest player in the league until his release in October 2010, thereby returning the status of oldest active player back back to Turk.