Doing 6-2, I finally got Ghlorofaex down against Seoni in the Temple. One dice-screw later, and he was somewhere else. Next turn, he popped up again and Seoni defeated him. The only place he could go was the Heptatric Locus so he ran there, and then the Temple refused to close because there was two copies of the boss there.
Here's a pic of the two in the Temple:
http://imgur.com/ZRL2vO7