He's clearly seen sneering after being informed that everything is going to plan which makes me wonder if he's an unwilling antagonist in these events. I may be reaching here, but given the structure of Ul'dah has made it easy for Garlean infiltration, maybe he's struck a deal with the Garleans pending an incoming invasion? By removing the Scions for the Garleans, he may have potentially saved Ul'dah citizens lives in the long run (or just his own life). Again, I'm speculating here, but I don't think it's too big a reach.