Can't you go and see him when you have control of the airship, go back to Guadosalam, and follow Tromell to the Farplane? I think he speaks with Seymour there, and Lord Jyscal too.

I've done it acouple of times trying to get Lulu's power-up item. Go give it a shot. If it's not what you like, then cage me up for lying.