If that's the rule, then from next week, the fans that sit behind the goal (and support the golie's team) will fill up the penalty box with balloons. The opposite teams will have to score without hitting any balloon. It will be like snooker
In Countdown there is a guy with a dictionary checking the words. How about a 5-th official with a rule book to check the rules?
And how about giving a Dyson to each Golie? They could hoover the penalty box when they are not busy!