[Yuki Maru Hoshi]

I think he's finding his role as the Alpha male too comfortable, nothing more. He's saying Ann is trying to control the house, but he's slowly trying to pick people off the others and create a little clique where he can undermine people emotionally (and energetically/personality-wise here). That's his boat she's trying to rock... he's annoyed he can't do the very thing that he's claiming that Ann is.

Other than that, I wouldn't say he is intentionally being calculating. I think he's playing to his character (super confident brah) and trying to get more camera time since he is up for nom... grab dat chick vote