He should put out a public statement to "apologize" and say something like "I see many of you were disturbed by my comments regarding the king of England. I apologize and want to clarify: The king of England can suck my balls, spin on my dick, and I can't wait to sing "Charlie's in a box""
That might bar him from ever visiting the UK, I dunno, but who wants to visit the UK when you're already Irish?