Upon reading the OP, it appears as it was collateral in an off forum loan to repay a forum loan more than a sold account. Hard to really tell, that or the person they dealt with wanted to use the account for 1 month for the amount paid, which is shady and untrustworthy to be "lending" out the account.
Can't really figure it out based on the OP. In the end looks as though it was more posted as a warning that it was a compromised account.
I didn't see where you found the account was used as collateral? And also where you found the account was sold by Parodium? As further as could understand the owner of the account was sold the account. And I also he was a due loan to Parodium.