Membership 2 - How to make membership termination delete user

I'm setting up a site where there is a single level of (free) membership.

When someone joins the site, I am using the Membership register functions which also creates their WP userid. (They don't see this as it is done in the background.)

I'm looking for a way to have a user delete their Membership and their userid at the same time. Is this possible?

If so, how?

Thanks

John H.