This happened to me aswell when I tried changing my password via secret question, you're account is safe because there's no way the hacker can use it once locked.
Fastest way to retrieve your account is email the recovery team and provide a signed message, timeframe of unlocking your account is usually 1-3 days after verifying your signed message.
The answer time at the moment is probably one or two days tops, rarely three if we're very busy. He's emailed us and since we've already started, I'd rather have him go through our process

but thanks a lot for your help!
Note: the hacker have access to my email and my secrete question is saved in my draft on the email.
You can message them with a different email as long as you have the signed messaged verified, that won't be a problem. Here's the email they provided to reach them out
locked(_)2019(_)vuhnu@bitcointalk.org
*remove open and close parenthesis
You may also try reaching out
hilariousandco if they did not respond within a day.