Got it. You shout to the five people and ask them if you should pull it. It's likely at least one of the five will want you to take the chance, which means he accepted the risk, which means you no longer have to count his death as an adverse outcome. Now the odds are even and you can safely pull the lever.
And if more than one of them says to pull it, then the odds are clearly in favor of pulling the lever.
Oh, well if that's Dallas then that's actually a great view.