I'm with everyone else - you did the right thing. We just had a meeting on harassment at work - you did exactly what you are supposed to do. Don't feel bad at all. Had nothing been said, he would have continued acting like a pig to you and others. I doubt that he will get fired (although this is not his first incident..) but it is out of your hands now. Don't obsese over it. Good job.

P.S. YOU DID THE RIGHT THING!