Is it a hot swappable switch? If it is, pop it out and take it apart, you’ll need to push the stems from the holes but once it’s apart it’s fairly trivial to do. If it is not hot swappable you can probably pry it apart but it will be considerably harder.

Are those sunsets? I’ve got a few spares if you can’t fix this one.

If you’ve got one, a tiny drill bit and pin vice would likely work.

You could try using a thin sharp object, like a sewing needle, and heating it up with a lighter, and then stabbing it into the broken off pieces. Once it’s had a few minutes to cool off, hopefully the melted plastic sticks to the needle and you can pull it out.