Sorry for posting at night, but this needs to be said. There is no rule saying Yoda can't give the specific role in an investigation. It's generally left up to the moderator, so he didn't screw up the game. Though if he had posted when Mookie asked him to, it certainly would have ruined the game.
Yeah I went a little too far saying that Yoda ruined the game and working a little fast here I got mixed up with the doctor and investigator and when I made that post I had in my head that Yoda told the doctor the position of the guy he saved got a little mixed up. Still I don't think that Yoda should have revealed the identity of the doctor. I might not have voted for Bronx otherwise.