I have an iPhone 3GS and I'm replacing the headphone jack/vibrator switch/power button flex cable. I noticed that the vibrator switch is connected to a small metal housing by 2 prongs besides the double stick tape. The prongs are mushroomed as if they were intentionally flatened at the tips. It looks like a mushroom or like a rivet. First, how do I remove it? Cut the tip, pry it out, or use heat?

Then when I install the vibrator switch on the flex cable to the metal housing, how should I flaten the tip if it is necessary? I searched for a video or pictures to no avail.

The part is on the following link. The switch is at the bottom left

iPhone 3G/3GS Headphone Jack Assembly

The housing with the switch attached is on the link below. above the orange #6 sticker is the metal part and you can clearly see the prongs that look like they were flatened like a rivet.

iPhone 3GS Headphone Jack Replacement