The account isn't overly active so I would expect Thursday to be fine but you will want to provide the signed message of an old posted address as proof that you are the original owner. I believe only theymos has access to IP logs and it would have to be a
very unique IP address in order for this to come anywhere close to being accepted as proof. Most typical IP's are random and/or shared.
If you can sign the message, you have a
chance at recovering the account by following this thread:
https://bitcointalk.org/index.php?topic=497545.0 Posting the signed message on this thread as well will allow DT members to tag the account to warn others.