Cline supervised people who were accused of abuse of a child and the death of at least one child that I know of. Many of the "techniques" were his. He was sanctioned by CO and, I believe, he lost his license. You can read about him on quack watch.
Also, three articles on his links to harming children or the deaths of children.
http://www.cnn.com/US/9610/24/rage.reduction.therapy/
http://www.westword.com/news/suffer-the-children-5063807
http://extras.denverpost.com/news/news0617d.htm
Thanks, it has been quite a few years since I was looking into these sorts of therapies, etc.