Regarding the 2011 rule change for false starts and illegal shifts, we must know Team A's status WHEN THE BALL IS MADE READY FOR PLAY. It makes a big difference. If Team A is shifting (two or more players moving simultaneously) at the moment the ball is made ready for play, then Team A must stop for one full second before the snap. While that, in itself, is not new, the fact that a failure by Team A to stop for one full second before attempting a snap is now a FALSE START is new. Prior to now, that would have been a live-ball illegal shift. No more. That helps us tremendously in those mass substitution scenarios when Team A sends in substitutes, and they aren't all set for a second before they try to snap the ball. Players trying to get off the field count, too. While they may have 11 players set for a second, if players 12, 13, etc., are trying to get off the field, and either fail to get off the field, or are off the field but the 11 final players aren't set for one full second, before they attempt a snap, that will now be a dead-ball false start, and we shut the play down as soon as the attempted snap begins. But that is ALL contingent upon Team A being in the process of shifting at the moment the ball becomes ready for play.
On the other hand, if any of that happens after all players of Team A have set for one full second following the ball being ready for play (or are already set at the moment the ball becomes RFP), then any such foul will be a live-ball illegal shift, and we let the play run it's course.
RR gives example plays in his bulletin on this, but here are some other scenarios discussion or comment. Check 'em out and see if my understanding is correct.
---------------
-4/10, B-20; A=8, B=10, 3rd period. 3rd down ended inbounds with 8:00 on the game clock. Immediately at the end of 3rd down, Team A's field goal team begins entering the field, and Team A's players in the previous play begin exiting the field. The umpire spots the ball at the succeeding spot with 7:55 on the game clock. Team A's field goal team settles into their pre-snap positions, and Team B has had opportunity to "match up." With 7:50 on the game clock, the snapper begins an attempted snap, while several departing Team A players are still at the bottom of the numbers. The holder receives the ball and the kicker kicks the ball which passes over the cross-bar, and between the uprights.
Ruling: Dead-ball false start - NO PLAY. A, 4/15, B-25; start game clock on RFP signal (25-second play clock).
-4/10, B-20; A=8, B=10, 4th period. 3rd down ended inbounds with 0:10 on the game clock. Immediately at the end of 3rd down, Team A's field goal team begins entering the field, and Team A's players in the previous play begin exiting the field. The umpire spots the ball at the succeeding spot with 0:07 on the game clock. Team A's field goal team settles into their pre-snap positions, and Team B has had opportunity to "match up." With 0:01 on the game clock, the snapper begins an attempted snap, while several departing Team A players are still at the bottom of the numbers. The holder receives the ball and the kicker kicks the ball which passes over the cross-bar, and between the uprights.
Ruling: Dead-ball false start - NO PLAY. By another new 2011 rule, Team B will accept the 10-second subtraction on the game clock; thus, the game is over.
-4/5, B-20; A=8, B=10, 4th period. 3rd down ended inbounds with 5:00 on the game clock. At the end of 3rd down, Team A's field goal team is gathered in their team area, near the B-25 extended. The umpire spots the ball at the succeeding spot with 4:55 on the game clock and 0:35 on the play clock. Team A's players from the previous down take positions and become set with 4:45/0:25 on the clocks. With 4:40/ 0:20 on the clocks, Team A sends in their field goal team (substituting everyone except the snapper) and the players on the field begin exiting the field. The 11 players of the field goal team get set for one full second and Team B has opportunity to "match up." Departing player A33, unsure if he is to leave the field or remain in the game, is still at the bottom of the numbers (having never stopped moving) when the ball is snapped. The holder receives the snap and the kicker kicks the ball which passes over the cross-bar, and between the uprights.
Ruling: Live-ball illegal shift - play continues. B will accept the penalty at the previous spot. A, 4/15, B-25; start game clock on snap (25-second play clock).
-4/10, 50; 1st period. Immediately at the end of 3rd down, Team A's punt team begins entering the field, and Team A's players in the previous play begin exiting the field. The umpire spots the ball at the succeeding spot. Team B has had opportunity to "match up." After all players of Team A stop for one full second, several Team A linemen adjust their positions on the line. A77 is still moving when the snap begins. A11 punts the ball which goes OB at the B-10.
Ruling: Live-ball illegal shift. B can have the penalty at the previous spot and repeat 4th down, or have the penalty 'tacked on' to the spot where the ball went OB. A, 4/15, A-45 (snap, 25), or B, 1/10 B-15 (snap. 25).