I'm so sure that Caboose and Dral are Mafia, I would bet on it. I know there's no "real evidence", but the way they've been playing. Dral's play is just an excuse, no PM's, rounds taking too long, blah blah blah. Just sifting through the game.
Caboose has been just going with the flow. He's been asking "So what do we do now?", and "Who do we lynch next?", playing the middle-man waiting for others to act, and suddenly now that he see's that G_bassi is the next highest target on the list, he jumps on him. This just reeks Mafia. As the TP keep getting lynched, they keep getting more cocky. This is exactly what happened last game, where it became apparent who was Mafia and who was not.