Okay, I did it! I re-read the whole game. Most of it anyway. Did some skimming.
Mostly, I came away even more convinced that schadd is scum. Look, here's the thing, first he defends gkrieg, and then he votes gkrieg when we are basically moving away from the discussion about gkrieg's traitor breadcrumb, and then he never moves his vote, ever. This is textbook vote-for-your-partner-when-your-partner-is-safe.
Subsequently, schadd was gone most of the day. Unfortunately for him, after the Eevee and Calamitas claims, it so happened that schadd himself was presented as the alternative to gkrieg. Which is a terrible spot for scum, and it's the reason gkrieg went down, I suspect.
Other explanations--the scum team is RR and Awaclus, basically--strike me as way too overly simple.
So yeah, I'm comfortable voting schadd. He committed to the light bus, the bus that doesn't lynch a partner, and he got screwed. That's what it looks like to me.