1). buy a cheap, cheezy flat head or phillips screw driver
2). grind the tip to a point, not a sharp point, but enough of a point to fit between the rubber and the stud
3). the stud makes a shape sorta like a nail, so push the "screw driver" into the gap, and when it stops going in, pry the tool about a quarter to a half of an inch out away from the center of the stud, and push down
4). after about an eighth of an inch, pry back in, as well as up. the stud should pop out with not a lot of ease, but a lot easier than using vice grips or electrician's pliers.
5). this may take a little getting used to, and may leave a few blisters, but myself having down this three times in the last week, know your pain..........glad i could help you out.
Flynt