I don't have specific experience with this program, but just looking at what was presented on your link it doesn't look to be significantly different from umpteen other exercise and nutrition programs that are available, many for free at your local library or available for much, much less elsewhere. I am very leery of the bottom line (expensive!) and hawking nutritional supplements (more ongoing expenses!), but I'm a skeptic by nature. A nutrition and exercise program I have found helpful is the Abs Diet from Men's Health/Rodale (again, available in book form at your local library). I am a believer of a varied balanced, moderate diet combined with vigorous, varied, regular exercise. If you want a starter online program for core strengthening, try this link that I found on BF some time back --
http://www.beginnertriathlete.com/cm...?articleid=486
-- this or something like it will definitely tweak the core if you do it regularly (and its free.) Do your own research and try different things (don't get in a rut! Mix it up and keep your body surprised.) You'll find what's best for you. And of course, ride, ride, ride!
p.s. to paraphrase: Eat food, mostly vegetables, not much