Seriously Incredible Water Slide Jump: Please Be Real

Click to viewThis video shows a crazy man launching himself off an epically-large water slide and landing perfectly in a kiddie pool very far away from it. Is it fake? I suspect so, but I really want it to be real.

The site that explains the stunt is all in German, save one vague video in English. Can any German-speakers decipher this and determine its validity? Please don't dash my dreams. If this is a viral ad for adult diapers or something I'm going to be really disappointed. Although it would be a great way to sell something that helps adults cope with shitting their pants, no? [Megawoosh via Today's Big Thing]