Yep, you nailed it. In Summoner Wars "place" is different from "move." There are actually quite a few cards that use the word "place."
Edit: Note that the units are still stunned for the turn. They're just not next to the Deceivers any more.
Thanks to you both. I'm new to SW but love it. Good to know about the word "place", I will keep my eye out for it! Unfortunately, I think I did use them on the turn they were moved, so I'll have to remember that they're still stunned!