It's a GM forum, so I assume a spoiler warning isn't necessary.
My players are going through Dead Cities, and just played through the attack on the Clockwork Court. Unfortunately (for me), one of them raced after the Risen going after the Governor (along with Skarmen). I didn't want to railroad too much, as this would clearly tip the players off that something shady was going on. For that reason, I allowed the player to catch the Risen and battle it. Skarmen "fought" too in order to maintain his cover. Long story short, it was a hard fought battle but the players were victorious. Skarmen actually struck the killing blow against a Risen, again to maintain cover once it became clear that the battle was lost for him.
So here's my conundrum - the Governor is still alive, and has his two mirror pieces. I've played it so that he is convinced that the Undertow is responsible for the Risen and is clamoring for war (although the players will try to talk him out of it). I could just arbitrarily have the Governor killed by a second group of Risen or something similar, but that seems arbitrary and not very satisfying. After all, the player did something heroic and saved the Gov.
I'm looking for any advice to get the train back on the rails, so to speak. In-game, Skarmen will still want the two mirror pieces that the Governor possesses - how might he try to get them now that the frontal assault didn't work?