I sympathise with your attitude towards the drunken idiot who wanted your crowd. I used a slightly different approach. I told the drunk straight faced that he was going to leave. Then I looked at the crowd and told them that I did not want one drunk spoiling the entertainment for everyone. I also told them that although I was quite confident in my ability to remove him, I was less confident in my ability to make it look nice. So I asked them politely if two big gentlemen would come forward and remove the pest without violence. Everyone smiled and it worked a treat. (Your drunk did not deserve any better than the treatment you gave him, but I would not recommend doing the same on a regular basis!)