Where you found this message ? If account hacked with email address and I am holding my private key then what happened? Sign message from unedited address or from staked address should enough for recover account in my opinion. How someone will send mail if account hacked with email address? I think it's very difficult. If this is true then theymos should consider some more options. Because account might be hacked with email address.
If account hacked with email address (also hacked) and you are holding the private key of a unedited address, i don't think you have chance to get it back. Re-read the rule please:
If your account was hacked
Email
recoveries...@bitcointalk.org,
ideally from the account's email address. Include your username and a brief description of the details of how/when the account was hacked. A signature will likely be required (see below).
As a confirmation, this is the email received by @OP and posted in his appeal thread:
https://bitcointalk.org/index.php?topic=2156605.msg49181496#msg49181496Hello,
Thank you for your email. The signed message was successfully verified.
Please note that the email address cannot be restored to a different one other than the original used to register the account. In the situation where that email address was used to create a different account, you will need to change it on the second account as one email address cannot be linked with more than one acount.
Furthermore, we will need you to send us an email from that original email address where you wil also receive further instructions.
Best regards,
Bitcointalk account recovery team