The primal doesn't have to be physically present. The most prominent example I remember is in the Sahagin daily quests - we are sent to rescue a group of captured Maelstrom soldiers who have been tied up and sat down in front of an altar to Leviathan, next to Reaver Hide. By the time we get there, we are able to save some, but others have become enthralled due to exposure to residual aether, and we are forced to put them down.

The tempered Ala Mhigan Resistance guards may have at some point been captured and brought to Lakshmi's summoning room.