If you really feel like you need him out of the place, you could:
Wait until he leaves for work in the morning. Then change the locks and carefully pack up his belongings. Take photos of this process.
Notify Air what you are doing in the AM after he leaves, so they can help him find a new place. Let him know as soon as the locks are changed, so he has time to sort things out.
Give him a time frame when he can pick up his stuff on the porch, if you think they would be safe. If not, maybe you could drop it at his workplace.
The main point is once you’ve decided he’s out, and once you tell him, you need to make sure he can’ get back into the house.
If Air trys to convince you to let him stay, tell them about the drunkenness and the comments about masturbation. Say that you, as a single woman, are “uncomfortable with him in your house.”