I suppose in that scenario maybe two of them could take the plunge after the first verse. They could be two couples happy wandering together and the evil goat could bite through the rope between the middle knocking the one man off and he in turn could crash into his unsuspecting wife or girlfriend and they'd scream together as they fell.
After their friends tragically fall the remaining couple could say "Watch your step honey" and "Yeah.Yeah dear." Then the goat divides the other couple's fate separately the way the rest of the sketch goes.
Awesome cool thought, isn't it?