Are there are couple of screws holding the red lens on the foglight? If so and if you remove the lens this might reveal some internal fasteners that attach the light housing to the rear bumper reinforcment.
If you remove the ugly rear fog light you may be left with an even uglier cutout in the rear bumper skin.
You can fit a red bulb in the O/S reversing light holder and wire this up to the fog light switch.