Another thought is that you can check http://who.is http://who.is. When you search there for the whois information, they have a history tab. Maybe the person

Another thought is that you can check http://who.is http://who.is. When you search there for the whois information, they have a history tab. Maybe the person that has the domain now has not always had the privacy protection on it. You might be able to get the phone number or original email address from that.