i think if i remember right the back one is abit more tricky to get off.
when i did mine, i had to gently pull mine off with a trim tool as mine was stuck on with some stickyfoam crap.
but my mate did his and his was screwed on from inside the box bit that the badge sits on. and to get that off, you have to remove the trim inside on the boot lid and undo the two bolts holding the box on.( be warned, if you dont put it back properly the push button to open the boot wont work)