Count Ignatieff was irredeemable.
-copied from here.
I did not perform too badly here. A Cutter is exorcised not by Father Ignatius but by the Sword of the Lady and, when Graber is not longer taking orders from that possessed Cutter, there is no longer any reason for him and Rudi to fight. It is like an American and a German in Europe after the War has ended. Or it could be like Dominic Flandry and Aycharaych after the latter's motivation to support Merseia has been ended - but we do not see Aycharaych after the bombardment of Chereion and do not even know whether he survived.
However, despite my comparison with post-War Europe, the War is definitely not over for Rudi and his subjects. When they return to the lands of their allies, the word is:
-SM Stirling, The High King of Montival (New York, 2011), Chapter Three, p. 53.
This is almost a relief. Rudi gained the Sword to fight the enemies of mankind and the sooner he is able to get on with the job the better.