I was refereeing at a local 5 aside league last night, it's FA affiliated, anyway, blue goal keeper came off worse in a 50/50 but tried to run the foot injury off. After a few minutes he was no better and had to lean on the post to support himself. When it came to taking a goalies ball he said he couldn't and asked if a defender could take it, which is against the rules. They didn't have a sub to replace him with and I wasn't prepared to change the rules for him. After a couple more minutes I stopped the game and said I wasn't happy with him carrying on as he would only make a bad injury worse. His team mates kicked off because that would have left them with 4 vs 5. I got a centre manager who said she couldn't make him stop playing but then a sub turned up so the goalie left the pitch. I was later told he had either chipped a bone or broken his ankle or a bone in his foot. What would you have done?