If you are fortunate, you may run into another crew member on another ship who worked with the person in question and they can pass along a message for you. I was fortunate to have that happen. You have to be patient though, sometimes it takes a while to get a reply....
I sense you were a victim of Vacatuion Brain as well and it slipped your mind and hit you AFTER you left the ship or were already at home!
2007 Victory & Triumph
2008 Conquest & Liberty
2009 Valor, Freedom, and Splendor
2010 Glory and Liberty