Inoda did manipulate Asuna though for the final scene. I believe Asuna was thinking she ended up pushing Kirito to this point where he had to cheat. I don't necessarily recall if Asuna acknowledges that she's no better than Kirito for cheating, but a lot of story beats are there to showcase and imply that Asuna isn't treating Kirito like it's 100% his fault. The fact she wanted to talk things over with him and confront him about what was going on are signs that she's aware of her very hypocritical situation.
But anyways in terms of Inoda manipulating Asuna, Asuna is emotionally unstable and even though she's a hypocrite, it's understandable. From Asuna's perspective she's been trying her best to be faithful to Kirito (yes we know she's not), and she also tries to do her best to maintain her morals and values. So the scene of Kirito banging a blonde haired lady ends up shocking Asuna deeply, so she's now emotionally compromised. Inoda ends up taking advantage of it by kissing her which shows physical affection while she's emotionally and mentally down. But the main important thing is that Inoda does a bunch of half truths and half lies while banging Asuna to convince her that Asuna needs to be more loose to not pressure Kirito. He points out facts about Kirito that Inoda shouldn't actually know, and then puts a lie in there that Asuna's strict morals are putting too much pressure onto Kirito. Basically he's able to take advantage of the situation and make her succumb to her desires.
At least that's how it came across to me this time.
