It seems it is the other way around. If you answer correct the acc gets locked and you need to email and prove it is your acc. Not sure what the logic is but... it is what it is 
Even if you answers to the security questions correctly, your account would be locked until you prove the identity via email listed in the banned message. It doesn't looks like the case with the OP as he said, he just tried to reset the password via email.
The most nearest case would be OP clicking on the lock account link in the password recovery email mistakenly.
