You will most definitely have issues getting this account back. The biggest issue will be finding proof you are the owner.
Every Admin/Mod will require a signed message, as shown in theymos' post below:

https://bitcointalk.org/index.php?topic=497545.0

Another issue is the content of the account's post history. There is not a single constructive post, nor a post the consists
of more than a few sentences. The account definitely falls into the ole shite post category. This is not only an obstacle for
getting that account back, but also a future obstacle you must overcome with your current account. If you plan on posting
in this forum, especially for whatever campaign you're making money from, you better plan on improving the quality of your
posts.

So, look back through the locked account's post history, for an address you can sign a message from. If there isn't one,
then the account is probably gone forever. If there is an address posted, sign a message and post it here to prove that
you are the owner. At that point, a Mod may look into it. Goodluck!!!