Mar 7, 2005 11:50 am US/Mountain It has been a tumultuous tenure for the University of Colorado and President Elizabeth "Betsy" Hoffman. The state's most high-profile center of higher learning has been embroiled in one controversy after another since Hoffman arrived: football recruiting; slush funds; Prof. Ward Churchill; and binge drinking that led to a student's death. On Monday, Hoffman decided she had had enough. In a statement delivered to the university's Board of Regents, Hoffman said her resignation would be effective June 30, 2005, or whenever the Board names a successor. "It has become clear to me that, amid...