The Falcons waived Harrison (undisclosed) on Monday, Will McFadden of the team's official site reports.
Harrison began camp on the active/NFI list but was activated in early August. He appeared in all three of Atlanta's preseason contests, so he appears to be past the issue that originally sidelined him. However, Harrison was cut Monday as part of a series of moves to clear the way for three players the Falcons added on waiver claims.