I don't think so. There are several pictures on Klitschko.com of Wlad "kite surfing", or whatever it's called.
It's not a fake. http://www.klitschko.com/eng/pics-wladimir.html Click on "kite surfing brazil" and you'll see a lot of other pics of Wlad on that same board.
geezus, I never noticed how damn skinny his legs were till now. He has the upper body of a greek god and th elower body of a friggin holocaust survivor.