Rules Analysis
If either team fails to maintain proper positioning before the pull, the observer will call "offsides" before the receiving team gains possession of the disc. The offsides call does not stop play, and the Continuation Rule (17.C) does not apply. Receiving team must have each player with one foot on the goal line prior to the pull being released. Pulling team may not have have any player’s foot cross goal line before pull has been released
A sideline player or coach who is leaving the playing field with urgency but is still on the playing field when the disc is released is not considered to be offsides or committing a false start. If a sideline player or coach on the playing field impedes a player from the other team, that is a separate violation.
If the pulling team is offsides and the receiving team commits a false start, the offense may put the disc into play at the appropriate spot for an offsides but may not attempt a pass until the disc is checked into play by the defense.