Also, I heard Teagan's voice actor.
He does a lot of minor/generic characters for Bioware, though. May or may not be the same character here.
I could see his hand in that. Letting the Qunari use the Eluvian, however, seems less refined than what I'd expect from him.
It's not even about refinement. Solas despises the Qunari. The only way I'd see him "leading" them is if he's deliberately trying to get them to lose (which, frankly, is a "trickster god"-ish thing to do, so y'never know). But I feel like it's not very in character for him to use them, even as pawns, otherwise.