Why is my macbook pro spontaneously swiping out of full screen mode?

I have a 2 week old 13 inch MBP retina (256GB, 8GB ram, 2.5GHz Intel Core i5, Graphics Intel HD Graphics 4000 768 MB, OSX 10.8.2) which was working fine until yesterday. I have accounts on it for each of my 3 kids, one for my wife, and one for me. When using any application in full screen mode, it now spontaneously swipes itself back to the blank desktop "space" after less than a minute. It previously worked as expected in full screen mode, and currently works fine when viewing applications without the full screen mode. Then, today it started displaying my log-in screen with inverted colors (color negative). The colors revert to normal immediately after logging in. This all initially started after accidentally clicking the airplay icon while my apple TV was off, and then exiting airplay mode...which may be unrelated. My youngest is also a bit of a keyboard masher, so he may have changed a setting with a keystroke combination. Any ideas? I have tried rebooting, and I even tried Shift-Control-Option-Power while plugged in with the power off (SMC reset?). Here's a pic of the color inversion: