YAY! Zag'mi managed to pull it off. Very well in fact. We only lost a couple of units.
I am surprised and pleased with my assistant. The other High Cultist had spells for Soul Slay and for Summon Lesser Horror (wish I had those). He fought till the end but Zag'mi defeated him nicely. AND has spotted a lightly defended Cannibal Village (more sacrifices) AND the other cultists assistant rushing to aid his master with only 4 troops in tow. Zag'mi is eager to follow his victory with another. I will allow it.
It is also a good thing that we left one troop. While Zag'mi was gone a wandering deer that I had not noticed wandered into the town. The spearmen we left dispatched it easily. It would have been embarrassing to lose our town to one deer.
http://www.dom3minions.com/~gandalf/CoE3/AAR2/b1+.JPG
(To be honest, the first combat failed horribly. And soon after that we lost our town. I did not want the AAR to end so quickly so I reloaded a save. The next combat went as described above. Please forgive me.)