Well, on the wagon there are 5 people. Robz is dead. The remaining are shark, Galz, PPS, and me. I am pretty convinced that there should be one scum among the four people, but currently they all give me a town read.
On the other hand, there are three people off the wagon. It is hard to imagine that with 2 scums on the wagon the scum still chose to kill Robz. So there should be at least one scum among the three. As I said, I have some logical reason to believe eevee is not scum. (Again, don't take me wrong, I am not claiming anything.) And that gives me the chance of at least finding 1 scum out of 2 people. Even if you include eevee it gives one out of three.
Try to think this way: why did the scum not kill eevee? eevee is probably the player with strongest town tell after frisk flipped VT. If he is dead and flipped town too, we then do not have any good idea among the rest of players. Of course, the loophole of this argument is that there will then be only two people off the wagon, and if we believe that scum will hedge then we will definitely find one scum. So, Robz's death instead of eevee suggests us to look at the off wagon people.
But of course one simple reason that eevee is not dead is because he is scum. But then you have to explain why he does not want frisk to be lynched at all. And if you go further you may start to see the reason that I am not talking about...