I was there for the show tonight! My vantage point was from the left side of the RoA near the Harbor Galley. I knew it was bad news when Murphy lean forward and then kept on falling forward to a 45 degree level and bobbed for awhile heh. The music continued to play for a bit up to the firebreathing portion but he didn't breathe fire.
The water projectors were then turned on and lights dimmed to conceal the bobbing Murphy. In the darkness you could see a few supervisors come on stage, shoo Mickey backstage and used flashlights to figure out the problem. The Mark Twain did float by with the characters as I was leaving but no firework pinwheels or music played.
Sorry to everyone that missed F! because of Murphy's woes. Hope he gets fixed soon!