The description on the video itself is perfect, "Bray Wyatt solves a mealtime dispute between Ramblin’ Rabbit and Mercy the Buzzard and hammers home an important lesson on “Firefly Fun House.”
Basically, Ramblin' Rabbit found out what happens to snitches.
The way the puppets respond to Bray asking if he "needs to get The Fiend" is another interesting development. This one was more unsettling than the complete absurdity of Do The Muscle Man Dance.
FFH is still clicking on all cylinders, folks.