Last play of the game. Visiting team leads by one point. 23 seconds left on the clock, last play inbounds. Visitors have the ball, 3D and 8 on the home side's 32.
With the clock running and showing 5 seconds left, the visiting (A) team QB takes the snap and starts running backwards, towards the 55. When the clock goes to 00, the quarterback stops. However, he is immediately tackled, and stripped of the ball.
B recovers the ball at the 55. At this point all the following happen about simultaneously:
a) fans from the both the home and visiting team pour onto the field, celebrating.
b) a B team player recovers the loose ball and begins sprinting to the endzone, and in short order, scores a touchdown.
c) players from the visiting team bench flood onto the field, some celebrating, apparently, a win.
d) players from the home team bench flood onto the field, some celebrating, apparently, a win.
e) a melee breaks out at the B45 involving fans and players. During the melee, and just as or after the fumble-recoverer scores an apparent touchdown, two B players engage in acts of RP.
Standard Canadian rules: what the HECK do you do? Please note location of next play, if any.
PS: Officials felt that players/fans of both sides interfered with the play, to both the aid and detriment of both sides, including the ability of A players to see the turnover, react to it, and pursue the B player who recovered the loose ball.
PPS: this actually happened.