Play: A1 fumbles ball at their own 10 yard line, and ball is rolling slightly at 10 yard line. Mad scramble for the ball. Players A1, A2, B1, B2 all at different times in trying to secure the fumble, 'muff' it in different directions. Eventually, the ball goes into A's end zone.
Player A3 in the middle of the end zone, all alone in clear view of all fans, again muffs the ball (accidentally) out of the back of the end zone while trying to secure the ball.
At first thought, it seems like the correct call would be safety, as A3 forced the ball out of the end zone. But on second thought, would it not be a safety or a touchback depending on who supplied the force to get the ball INTO the end zone (A1, A2 or B1, B2)? It would seem like a hard call to make because the 'force' could have happened on the 4th to last touch or so 3 seconds earlier.