He's claiming Masons with Yo Tan Wa. There is a chance he's lying but Masons are supposed to share alignment here (Gramma, Cal etc I believe use Mason to define a role that doesn't share alignment explicitly but the terminology is different here). The long and short of it is if he's lying he's playing a huge risk exposing two scum roles if one flips, so for now his claim can be put to the side.