{DISCUSSION}Xperia Z back glass coming unglued

So I've had my Xperia Z for about 2 months now and it has endured water tests, and stress test (software wise). I'm completely satisfied with the results. However I was cleaning my phone with my microfiber cloth and noticed something odd when cleaning. As I look up at the top left of the device I see that there is a slight bulge or lift of the device I am wondering if this was after my long photography session I did with it as it heated up quite a bit and the Snapdragon S4 is around the same area. I'd like to know if anyone came across this lift / bulge and had any issues with it / got it back down because the uneven-ness bothers me mentally, I have still washed my phone however haven't fully submerged it since I've noticed bulge. I'll post some pictures on what I'm talking about, I figured someone here can help me out with this for I won't be close to a Sony Service Center to have a look at my device until July.

http://forum.xda-developers.com/showthread.php?t=2304680