Yeah, a few pages ago, Andy was still nervous about moving onto his boss.
Now, he is comfortable enough to flip him off.
I suppose this indicates that, in Andy's mind, he had moved from being an assistant to being a lover.
Andy, you should let Emery explain in the next page, alright. Don't be a bitch and leave the room misunderstanding the whole thing. And, maybe allows Emery to treat you a nice dinner as an apology, then follows by a hot make-up sex.