Thank you [link|https://www.ifixit.com/User/1293562/gee-one|gee-one|new_window=true] for explaining this, I've been struggling to open this thing without ever realizing that there even was a liner!
As noted in the accepted answer, the two screws are in front of the hing beneath a rubber liner inside of the case that the earpiece rests on. I was able to slip a thin metal jimmy under one edge of the liner and lift it up pretty easily.
[image|2730219]