An area of the spread offense that drives defensive coordinators crazy is the pre-snap motion that many offenses use to out-man or gain an advantage on the defensive alignment. This changes the strength of the offense, and the defense must react quickly to re-align. To view a recent article with diagrams on simplifying the pre-snap motion offense out of the spread, go to: http://www.spreadoffense.com/ssp/spread_offense_motion_plays
--Mark