In June 2011, Crombeen signed a two-year contract extension with St. Louis. He suffered a broken left shoulder blade, however, in the Blues' final pre-season game in October. He finished the season with three points and 71 penalty minutes in 40 games. After the first year of his extension, St. Louis traded Crombeen and a fifth-round draft pick in 2014 to the Tampa Bay Lightning in exchange for fourth-round picks in both 2013 and 2014.