you have got size 20torx screws have 3 down each side of bumper (in wheelarch) both rear lights need to be removed (can be a pain in the butt) the metal clips on the back are blooming tight then you have a couple of srews under lamps either side about 4 underneith i think and then pull outwards on bumper corners to release from bumper brackets.
if its a non-electrical toe bar, cant it be done without removing the bumper?