You could say the punch line was the plethora of players losing their footing at various points of the game. Or maybe the shrinkage of the field from 100 yards to 80 yards and instead of the red zone beginning at the 20-yard line, it was at the 30.
But there was nothing funny about the complete negligence and lack of preparation that caused these things. The area in which the goal posts were removed in the end zone for the Winnipeg Blue Bombers left sections of the field soft and unsafe. But you can't cancel the game as a result of that and rob young players the opportunity of showing out for roster spots.