NF play.

[Warrenkicker]

Your doing great up until #4. On that one I will agree with you that a play has been run, the screen pass. However the down was not changed. It was replayed. Then even after the illegal formation it is still the first first-down following a fair-catch or awarded fair-catch. Thus A has the option still, even after possibly moving the ball 90 yards, of kicking a free-kick for a field-goal. All of the rules references are listed above.