I'm curious to know what you would expect from that guy if that module broke at 4:00AM?
Although, (ideally) any problem like that would be cost by a testing suite.
I rarely roll in to work earlier than 10 am, and that is down from about 11 am at my last job since this one has a regular 10 am scrum meeting. Yet, I wouldn't consider leaving a broken build active on Friday evening, and I'm just talking about the tip build in source code control, not a broken production system. I wouldn't even consider working for a place where developers just pushed new code willy nilly to live production systems, because that's just stupid.