FeedWordPress - Switching a corrupted feed URL

I have a particular feed that causes my VPS to hung and I want to change the feed URL. However, switching feed doesn't work as it will still try to check the feed first. My next best bet is to delete the feed and re-subscribing it. Here are the steps:

1. Under the feed >> Delete permanently
2. Delete this syndicated link, but keep posts that were syndicated from it (as if they were authored locally). *IMPORTANT: The default is to delete the syndicated link and ALL posts. Do not select this.
3. Unsubscribe from selected feeds
4. Add new feed.
5. Update the feed.
6. Check that the syndicated author is correct.
7. Check under all users that no new author is created. Sometimes FeedWordPress will create a new author with a similar name to the old one.
8. Check the post, author and syndication permalink is correct.