I replaced the bulb in my pre-facelift accord last Sunday. I did it at the same time as removing the headlamps so I could silicon seal all the way around because they had a lot of condensation after washing the car. Bearing in mind that the bumper is only held on by plastic clips and a couple of screws, I wouldn't bother fannying around trying to remove the fog light from the rear, in situ. I struggled a bit to remove the tiny screws securing the back metal cover of the lamp ***embly but the bracket itself was easy to remove from the plastic bumper. I too had to drill out the black screw securing then black plastic lamp trim through the bumper. to the lamp bracket. it does seem a bit weird to design these thinks so that you have to completely disassemble to change the bulb. I had to laugh when I looked in the owners manual and saw half a paragraph and a single diagram supposedly illustrating bulb replacement. perhaps Edward Scissorhands did it for them.
Steve