I think he got miffed with Lisa because he realized that she's going to stay here longer than him. I think he was hoping they'd nominate her over him because he's more their friend, but realizing his plan has fell to shit. So who better to blame than his girlfriend?
I believe the argument about the ashtray was about Mario talking about Belinda saying she saw three people move away from Mikey when he entered the room (inferring that they didn't want to talk to him). He said he knows who those three people are and those are good people, she is just trying to stir up drama and be a "bitch".
I think the people he's most threatened by are Kat, Rex, Belinda, and Darnell.
















