2017 Spectre x360 back panel removal?

Im trying to remove the rear panel from my 15' x360 to upgrade the ram. I took out all the visible screws but then also knew there were supposedly screws under the back feet, however i tried pulling off the rubber feet and under was this, pictured below. the feet were on with adhesive and these plastic pieces are on help on very strongly. Ive tried prying with all sorts of tools but cant get them to move. I Dont see what im seeing in any online guides so im a bit confused. How do I get these off? PS. the selected device is not my exact model, but the closet I could find in the device list. Thanks!