It was definitely straight before, as soon as I span the QR tonight to loosen you could feel it immediately. The nice thing I suppose about 6800 is that it's so reasonably priced should anything need replacing, but still mystified.
Is the rear wheel sitting well inside the dropouts? If the QR has been closed tightly while the cup on the NDS was sitting slightly out, that would probably bend the skewer...
Or could be that the wheel moved on the dropouts while riding.
Was it bent before maybe?