@Dave1025
As a matter of fact, the guest is certainly not a good fit in a home shared environment accommodations.
You stated,
“His behavior has made my wife and other female guests uncomfortable,
as well as many of our neighbors very uncomfortable.”
As in this point of your view, definitely are correct to ask the guest to relocate without hesitation.
Well communication with guest about your concern, do contact Airbnb Support Help Center in the Hep page, “live chat” [ not an Airbnb bot], there is always someone here to respond within few minutes, acknowledge by urgently the incident to the support team.
I’m surely the team with report to the case manager, and they will contact you soon, do always keep your phone beside you and often to check your in box in the Airbnb message.
1.Requirements the case manager to cancel on Airbnb behalf
2.Refund the payment of remain night to the guest, which’s the nights not spend in your home
3.Relocate the guest to a new entire place by his own with his budget
From my personal experience, It’s very important to request Airbnb to find a new place for the guest immediately. Therefore, the guest could conveniently and agree to leave. Indeed, the host is not wish to have the situation get worst during any cancellation booking with the guest, the host and Airbnb are necessary to resolve with a great and fairly solution to settle in the both side.
I really hope you can solve it out with the guest and get the Airbnb to involved as soon as possible.
Good Luck and Stay Safe!