i allready told to him to change EMAIL!!! like before 1-2 weeks!!
If u didn't use a MM and if you didn't confirm your trade 100%. Then I can't do anything about it... if you honestly bought that account, then it should be ur responsibility to take care of it and make it fully "yours" so you can do w.e u want to do with it. I can't do anything for you at this point. Ask Windstruct.