I don't see any motion panning -- something is supposed to be in focus, and I see nothing distinguishable. I don't even like it as an abstract. Sorry, not a fan.
First thoughts - an aesthetically interesting image with no discernable subject other than indeterminate shapes and tones, created by a less than obvious camera technique. Is any of that of any consequence? - other than the aesthetic appeal, not at all. The image provokes in me a sense of...I can't really articulate it, a sort of sense of 'being' - it somehow depicts a whole bundle of very personal emotions. I guess what I am saying is that an abstract image such as this is what it is perceived as to it's creator and to each viewer; each will take from it something completely different and governed by their own experiences and psychology. For me, it works extremely well.