FLOWERY BRANCH — The Atlanta Falcons have re-signed fullback Mike Cox and released the player who beat him out, Lousaka Polite. Cox initially signed with the Falcons last season after Ovie Mughelli went down with an injury. Cox was favored to keep the job heading into this season but the Falcons went with Polite, a seven-year veteran who had previously played with Dallas, Chicago, Miami and New England.