Brian Henson shows the sword fight with Kermit and Tim Curry from MTI at an event in August 2018.
"We did the shot on the beach without Kermit there, with the camera moving and tilting up and down, and we had poofs that were poofing the sand, and strings that were flipping the branches, and then Steve Whitmire performing Kermit, then dressed in blue with fluorescent lights, actually just rehearsed over and over again to play-back at that place so they hit the feet where the sand was and hit the branch on the branch flip, an then he got every flip in. It was really quite amazing, I think he rehearsed it for a couple of days, and then when he went in to shoot, on take two I was like "Well, dang! You did it." It came out really good.