So, the team is back in the team list (including my claims), but I am not a member and so can't interact with anything. I did request an invite, so if there's a command for a mod/admin to approve that and/or to manually add me to the team, I think that'll fix that part of it.
My homes are still gone, though. If that is also fixable, that would be great - if not, I should be able to get most of them back.
Thank you so much for your help with this!