Gameplaywise it didn't take all too long to get rid of him in the previous 0.9 version.
And while he was in the house, on war path you would hardly notice him anyway, he would only be with Ann twice a week or so and once in a while not allow you to enter Alice's room when she was blogging. His "lessons" with Lisa could be sabotaged by drugging him (rather fun actually) and once certain events happened, it would trigger kicking him out automatically. If by then you had all the incriminating photos, Alice would help you. If you didn't, then Lisa would be the one. One way or another, he would be gone soon after that.