That way should work, you don't need to reset the password, just deleting the lockout on your account should suffice, refresh your cache, or try a different browser (use incognito mode in your current browser) and test the existing password again.
(empty list or set) would lead me to believe that that field is empty. Which means you're no longer locked out. Unless you're somehow connecting to a different database than what is set in your config.json. (By default, 0)
I just saw this issue on this forum. I was reading the persona preview thread, ignoring the box telling me to go where I left off. Then I quickly scrolled to the bottom. There were 5 reply buttons in a row with no posts between them.
I am using the latest version of chrome.