I was just thinking of nasty things I could do to the tech-priest in our group, and I had a thought:
What if the group was lured into a position where an electro-magnet was concealed in the ceiling? You know the sort used to lift cars around the junk-yard. The powerful things that easily lift a several-tonne heavy metal thing. Would it work on a tech-priest composed of more metal then flesh?
Would it do more than just "glue" him to the ceiling? (or wall, floor, whatever) Would it mess with his electronics?