I was able to "work from home" today and went out to mess around (Shhh..don't tell the VP I report to...). Good Gawd....these were not meant to be easily changed!
You need to have the wheel turned to get to the wheel well liner fasterners...there are 5 in there (2 phillip's screws on the front , two "push-in" expanding fasteners in the brake cooling duct, and one star-type nut on the engine side of the wheel well). Pics attached of driver's side
Under the front of the car there are 3 10mm bolts that need to be removed. They definitely put this thing together well.
Once you pull that back enough to work, you can see the rear side of that grille (and mine is definitely solid), but not the two bolts holding the crossbar on. The lateral outer one is somewhat visible, but you need to remove the grille to get to it. The inner one is obscured, with no way to get at it unless you remove the grille or the entire front bumper. I tried to figure out how to pop out that grille, but at the rsik of breaking something I stopped. Not worth it...yet.
On the photo of the back of the grille:
Yellow circles = areas where cross bar bolts should come through
White circles = clips that I believe you need to release to pop out the grille surround...looks like it's a separate piece from the rest of it but not 100% certain. There also appears to be at least one screw holding that in, can't remember if it was down in the 7 o-clock position or up at 11 o-clock.
I'm just going to try plastidipping mine black while they're on the car for now. Definitely not worth breaking anything trying to get these off unless I was going to replace them with S versions.