I think Maverick laid it out pretty well above. I also don't like the idea of banning people and then "unbanning" if you will- does anyone really believe if you let Landlord back it'll somehow result in no further issues? Banning should be permanent IMO, the precedent of letting people back sends the wrong message to the rest of the board IMO. This type of situation reminds me of a toxic ex that after you've spent enough time together you rationalize a lot of what happened, only to be together for 2 weeks again and the same issues arise.
My thoughts are this- if we let him back thats fine. But be prepared to send him into the abyss within two weeks of him being back. And at that point, is it really worth any of our time having to monitor that situation?