As there are no messages to be orphaned, I banned the e-mail address (so it can't be reused) and deleted ID (which requires Director status).
This is also what I've been doing with the most recent new Mabus registrations (ban e-mail, deleted new topic, delete ID). I have left a fairly recent Mabus topic open and that version of his ID unsuspended, to give him a chance to post something worthwhile - He hasn't cooperated on that effort.
Your history tells us that this is just the beginning of extended excursions into Forum Guidelines violations. The goal of EvC Forum is constructive discussion, hopefully you'll be more in tune with that goal when we see you next month.
Please be familiar with the various topics and other links in the "Essential Links", found in the top of the page menu. Amongst other things, this is where to find where to report various forum problems.