Better way to get rid of a ring, I think
If you really wanted to delete the ring, instead of deleting all of the sites on the ring, you might try deleting all but the sites that are under the control of you and maybe a friend or two. You let it sit for a few days, then everybody cuts code and you delete the ring.
If they want to revive a ring on which none of the members have working code and none ever will, they've free to do so. We won't mind the free traffic. If they want to try to police this, good luck knowing which of us knows the others. Please pass this around, as I'm sure this post will be the next to get deleted.