Removing the trunk emblems is really easy, with no risk of damaging your paint and little risk of breaking anything. I've done lots of these.
Open the trunk.
Remove the lock mechanism--this is held in by just two bolts.
With a flat tool suck as a screwdriver, push the tabs from below--not all the way at once, work each one little by little, and you will move the emblem up and out. If you damage the little plastic wedges that hold the emblems in place, these are easily obtained from Mercedes or an auto body supply outlet.