So let me get this straight, you were willing to access your account after ~a year because someone was randomly PM'ing you, but you were not willing to access your account when theymos emailed you when the forum was hacked?
I opened the PM message and saw a loan being discussed. Of course I'm going to look into it if I think somebody is impersonating me to rip somebody off. Also, I do recall the E-Mail about the forum being hacked, and I thought I had changed my password, but when I looked at the one I had saved in my browser (yes, I need to stop managing passwords that way), it was still the old one, to my dismay.
I would say that based on what I have read so far that it is more likely then that that the person who the OP sent the loan to is the same person who created the "WhitePhantom1980" account.
If I am the same person as the guy who requested the loan, then why wouldn't I just pay it back to get the account? I am willing to calmly wait until the guy who hacked my account fails to pay back the loan and then I'll pay it back to recover my account. I suggested that to Sarahiko as soon as I realized he had, in fact, already sent the loan to the hacker. I have far better things to do with my time than create drama by getting a loan and then making a new account to cause trouble. Work, wife, toddler, video games, etc.
Lastly, here is some additional evidence I provided to Sarahiko yesterday in a PM to show that the account is mine.
I have since added a new image to that Imgur album that states, "WhitePhantom1980 is the rightful owner of the WhitePhantom BitcoinTalk account."
All I want is for Sarahiko to wait until the hacker doesn't pay and then sell my account back to me for what the hacker owes him rather than auctioning it off.
Edit: Something that just occurred to me was that the hacker may not have changed my password before handing the account over to Sarahiko. I just PM'd that password to Sarahiko with the hope that it helps establish that there is no reason not to let me buy it back from him after the loan has not been paid.