Well I see four cases:
1) We have a single SK left.
2) We have a single Mafia member left.
3) We have a Mafia and an SK left.
4) We have a Mafia team left. (I guess this is two cases: it's a separate second team or there was only one team of at least 5. I'm not sure if the latter case is balanced. Is 3v3 multiball balanced here? 3v2?)
So, no way Gkrieg is on the Lord Protector's team: he admitted to shooting EFHW and Hydrad. Anyone else could conceivably be any of the cases, so hedgewise we're better of not lynching Gkrieg.
Well, actually I don't think we can be in (2), because Ruin doesn't make sense as Mafia. And (1) might be too strong for town.. that would be 3 Mafia, 13 Town, 1 SK. Wheel of Time was 3 Mafia, 9 Town, 1 SK. So we're probably in 3 or 4, and still 3 fits better flavor-wise. I think we're better off going for Mafia instead of Ruin.