Lol... super stuck - broke it. So far I'm 0 for 4 on iFix it repairs.... never buying some piece of crap unserviceable electronic junk like this ever again. It's not worth it. Marketing and Industrial Designers need to get their heads out of the sand.
What a pain. I suggest you get an i-opener heat bag up to 180F, wrap the earbud for two minutes, then jab at the corner opposite of the Sony logo with a small electronics flathead screwdriver. After the corner is breached, twist the screwdriver to further separate it, then use a pick to separate the rest. Much easier then trying it with some plastic tool. Minimal damage, and worth it.
Be sure to pry the top most layer only. there is a frame for the replacement kit that is meant to stay in tack that sits directly below the display. It cracks easily too if removed. Advise super glue...
Took 30 minutes + to get the back cover off. Used another suction cup to grip from the busted screen and the ifixit suction cup for the back. A thinner Acoustic guitar pick was required opposed to the standard Blues picks provided in the kit (har-har). Would HIGHLY suggest getting a pick into both the back and the front before removing the panels as it will give you more surfaces to pry from. Made that mistake...