Anyone tried DDP yoga?

I saw a video online about a man that did this and lost a considerable amount of weight as well as toning up, after doctors told him he would not be able to walk again, he is able to run. My husband is also a wrestling fanatic and has told me about this program. I have checked out the website and I have to admit, my curiosity is peaked and I am thinking about ordering the first program and seeing how I like it. Has anyone else tried this? What kind of results have you had? Thanks in advance for any feedback :)