I've honestly never been aware of the "lock account" feature, so don't know if it can even be recovered independently without the help of the recovery team.
The feature deters unauthorized use of the account.
Let say a hacker accessed your account and tried to change the email address, which is pretty easy if they have your password. A notification will be sent to your old email address containing a link to lock your account. Once clicked on, your account will be locked. Even the hacker won't be able to access it using the new and old email address. Only way of unlocking it by contacting the recoveries team.
Does that mean you can't also receive a recovery process email if you click the "forgot account" button?
I don't think so.