I agree that it is lens flare, no doubt about it, as I was looking right into the sun.
I remember seeing the green spot in the viewfinder, as I set-up the shot, when I pressed the shutter the green spot stayed in the picture. Somehow some residual light got into the lens. The only thing I can think of is that my left hand got in the way of the light and caused it to disperse across the lens, the light is positioned in the top right corner, not an ideal location and my hands are big:
Anyways, not a big deal, it did show up in other pictures as well that evening from that same spot, but not all of them. Thanks all for your input.