Cinders, I know it bothers you that he's being cold and indifferent, but you know what? That's the passive-agressive behavior talking. They get this way when we do not do what they want us to do. They are hoping that we'll feel so bad that we'll finally agree to do anything to get them to talk to us. Let him stew! He'll get over it and when he sees you aren't taking that bait, he'll come around again.
As for your children, they played hard today and had a busy day, so they went to bed. Your h needs to grow up and understand that kids do get tired and need to sleep/rest. His problem is that he wants everyone at his beck and call. Life doesn't work that way. He's out there having the time of his life while you are beng the parent and the mature adult. You have three little lives to watch over and quite frankly, I wouldn't give a fig if he were angry that they were in bed. You are doing exactly what you should be doing as a mother/parent.
When a door closes, a window shall open. God doesn't put us in these positions for fun. There's a reason for all of this and trust me when I say that something good will come out of your situation in due time.
Please take care of yourself. Don't allow his behavior to get to you. BTW, that's what he's hoping....you'll feel so bad that you'll run to him and agree to do whatever he wants. Don't fall for that. Time to do a lot of 180s!
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.