Not too sure if it was touchy button or what (DX8's have a button vs a switch), but control was lost, and so was the plane shortly there after - Planes crash, it's part of the hobby (no matter how hard we try for it not too be), you just have to pick yourself and all the tiny little bits off the paddock, and move on.
First major loss/issue I've ever had, but it may well not be the last.