Option 2: You are Town, the Mafia player came to you, and if you are Mafia, then he has a kill night drive. Why didn't he kill on the second night? (There were only you and him in the block). It doesn't add up.
1. Why do you think that Mafia players are obligated to kill with one role? If one of yesterday's versions is true (or accidentally true), then the Mafia players could have been afraid of a blocker and decided to kill with another role.
2. Why did Nebok reveal his theory? In my opinion, there's only one reason, otherwise he's truly delusional. Or maybe both.
3. I think Yashchur usually looks for Town and suspects everyone, but now he's mostly defending himself.
4. Would a Mafia player disguised as a Cop react so quickly to Neb's delusional theory? Usually, Mafia players add votes in the middle, someone closer to the end, and even then, more often based on clues and so on.