Anyone know what the rule on this is? Is the ball out of bounds? (A one shot penalty and drop from the point nearest to inbounds?) If the spectator had stayed on his feet the ball would have fallen to ground and no one would have noticed.
I would think it falls under a temporary hazard (movable object like a stand or sand rake) and you are allowed to either move the object and place or move the ball to an unobstructed lie no closer to the green.