I beleive the screw on the front of the fogs needs to be removed to do the glare guard removal. Just remember to re-align the lights after you do the removal by pulling up to a wall and adjusting them with this front screw so they aim well below the low beams.
It seems every meet I go to someone has done the glare guard removal and has their fogs pointed up at the sky (because they tightened the aiming screw all the way down), lol...