This^^
In my head canon, my Lavellan has now seen too much and she's p*ssed off about all the lies and injustice. I joked with Patrick Weekes on twitter than my pro-mage, anti-circle/templar, pro-spirit, pro-elven glory, Solas romanced, well-sipping, warden-exiling Inquisitor was one questionable decision away from becoming what most of Thedas would consider a super villain. I thought she was just a freedom fighter, but after Jaws of Hakkon, I think of her more as the Punisher.
Unfortunately, not all Inquisitors are like this, so they couldn't make the DLC where Solas actually has to stop Lavellan from doing something stupid. I think it would be awesome if they could figure out a way to make that happen though, where the player is the antagonist and doesn't even realize it.
I actually do like seeing my inquisitors, lavellan and trevelyan, as Thedas' "The Punisher", though the Punisher was actually intelligent, so I couldn't really jive with Solas coming in to stop them from doing something stupid... It seems like the story's going the opposite direction of that honestly.
I've seen this idea come up before, along with the ideas of Solas being the real Inquisitor, and being behind everything and this and that, and it honestly puzzles me. Not that I don't get it (well, maybe), but that people would want it. You're the hero, you're in charge. People already get told what to do on a daily basis by bosses, spouses even. Can't imagine me ever actually wanting to play runner up to someone else, no matter how much I liked that character.
It just seems odd to me people fantasize about being dependent. Submissive, I get. I write smut after all, lol. Dependent, controlled. That doesn't compute for me personally.