Demps was waived by the Eagles on September 4, 2010.
Demps was signed by the Hartford Colonials of the United Football League on November 8, 2010.
Demps was signed by the Houston Texans on December 7, 2010, after the team placed defensive end Jesse Nading on injured reserve. On September 3, 2011, Demps was cut. Demps re-signed with the Texans on October 25, 2011, after Danieal Manning was lost for 4–6 weeks due to a broken leg. Demps was again resigned on April 4, 2012 to a multi-year contract.