From what I've seen, reddit's policy is to quarantine a subreddit and warn the admin to moderate more heavily "or be banned". My guess is they did this to ensur

From what I've seen, reddit's policy is to quarantine a subreddit and warn the admin to moderate more heavily "or be banned". My guess is they did this to ensure reddit wouldn't ban the subreddit and wipe out its whole history (at least that's what I'd do if faced with such a situation).