Its Red How Long Do We Leave It Like That
The consensus was it should remain broken for no more than an hour. Anything longer than that and it needs to be rolled back or a branch needs to occur. Of course, there will be exceptions to this, ie. you are the last person in the office, no one is checking in for the next 2-3 hours, etc. Bottom line, COMMUNICATE with your team!
As far as what to do with the person that broke it? A couple of ideas were suggested- wear a tutu, must buy doughnuts for the team the next day.