weird changes in sound

played CD of EC "Unplugged" today weird change was the entire image was shifted left about 8 feet from usual placement,change to another CD sounds as usual, played EC again sounds exactly as it usually does image in proper placement?
Any ideas why? Using Audio Aero Capitol player
Other than what you may have been smoking or drinking at the time? A loose connection with an interconnect, maybe? I once had a similar experience when I first got my Audio Logic DAC, apparently it took the MIT Multicaps a while to break in, and a shifting soundstage was something that occasionally happened while the break-in took place.