The website of Cornelia and Arnd Hannken-Illjes celebrates Chuck and Lency Spezzano's Psychology of Vision along with Elke Kirchner, Jin Shin Jyutsu, shamanism, and the construction and use of a sweat lodge.
http://www.overndiek.de/html/heil.html
The sweat lodge was constructed by Andreas Wesemann who markets his version of Lakota ceremonies for a profit. He says he was a student of the late Archie Fire Lame Deer.
http://www.overndiek.de/html/weiter.html
It should be noted that the Spezzanos, Kirchner, and Lame Deer are all frequently mentioned in the forum New Age Frauds and Plastic Shamans
http://www.newagefraud.org/smf/index.php