Hold it now. You mean you sold all of your reputation for 1BTC? You could easily have asked for a loan and then repaid later
The timing isn't quite right. You sold it in August and the other person paid you in September? You do have lots of trust to the other person. Additionally, if it was paid at that time, the account should have a password change somewhere around there. I checked the seclog in September 12 archive and October 13 archive and none had a password change on your account. It's a bit limited however, we can just asked theymos for the clarification.