A couple of points. First, if you focus and recompose, the sensor displayed on the camera of NX2 after the photo was made will not necessarily be what you were actually focused on . . . if you are in AF-Single mode. In single mode you lock focus, recompose and shoot. The focus indicator in NX2 will not be what you focused on because you moved the camera after locking the focus.
However, you said you were using continuous mode and that is a whole different kettle of fish. In that mode the camera is shifts it's focus as you recompose. The focus sensor reported by NX2 will be accurate, and your intended aiming point will be out of focus.
Try setting your focus to AF-Single. Then you can focus, recompose and fire without changing the focus from what you intended.