I'm sorry for your result. These are the facts:
1. You did NOT have a prior asymmetry before your surgery. Even the most symmetrical people appear to have asymmetry in x-rays - ignore the x-ray.
2. Mommaerts screwed up your surgery. Accept this before you can move on. He did NOT do the best he could, as you say it, or if he did, he's an incompetent bastard.
I'm not sure if my experience helps you, but I had a prior surgery with him gone VERY wrong. I ended up with an asymmetry (and MUCH else unfortunately) and basically spent a whole year wearing thick beard and saving for a new surgery.
When I finally had the surgery, the surgeon spent 6-7 hours operating, a big part of itremoving the HA. The surgeon said my bone was "SOFT" underneath and he had never seen anything like it.
Mommaerts HA concoction and the way he applied it resulted not only in asymmetry but a lot of structural damage.
You did well to ask him 2-3 weeks after the surgery for correction - as always, he ignored his patient and their concerns.
As GS above said, there are many devastated Mommaerts patients around on the forums, some of them here.
I hope you and I and other people like us serve at least as a lesson and warning to others. Go to Mommaerts and not only you'lll end up functionally and aesthetically screwed, but you'll have your concerns ignored by the ego-maniac once that happens.
Feel free to ask me any sensitive questions via PM.