Exactly.
It was the only way we would could make the torso seemingly move in the fall.
Maybe you could have used a dummy (Bot) and evented it to play the arm flail animation then use the tumble event to fall out the window.
I'm actually going to go check if that works and see how it looks.
EDIT: Can't find a way for the bot to continue flailing his arms while tumbling. He will flail his arms while tumbling, but the animation is too short.