The Titans signed Ruud to a one-year deal in the preseason. He had been inactive for four of the past five games due to a groin injury, prompting Tuesday's roster move. Rookie Colin McCarthy has been playing well for Tennessee at middle linebacker.
Malast was with the Titans in training camp but was waived before the season started. Undrafted out of Rutgers, he spent time in 2009 on Chicago's practice squad and was in camp with the Bears in 2010.
Copyright 2011 by The Associated Press