We should probably move this to Archives then. But with one exception. If there's no sign of any people still holding him up as an authentic teacher as they do with Castaneda, Franzone/Ghostwolf, etc.
Several sites with ads/promotional articles/reports on nuage congresses he took part in are still
online, as e.g.:
http://www.eso-garden.com/index.php?/weblog/random/=puuurelgdsp/P900/ In these ads etc, Colbert of course gets presented as the real deal, along a few more fakes and frauds like Katchinas Kutenai, Devalon Small Legs, etc.
One person claims to have done a vision quest with "Pushican":
http://www.lutz-pickardt.de/vita.htm 1996 "Vision Quest" - with Pushican (Traditional Healer and Chief of the Comanches)
The link you provided was interesting, as it links to two other forums where Colbert has been discussed. One of them has this little gem:
http://threads.rebelscum.com/showflat.php?Cat=&Number=3216480&page=0&view=collapsed&sb=5&o=93&fpart=1#3216480 User swsigsuk, contribution # 3216731, dd Dec 05, 2008, 06:18 am:
... Flash forward to 2003 when I got a call out of the blue from him saying that he was over in London for a week or two, he remembered my letters (I'm a fencer and very interested in stunts in general) and would I like to meet up for coffee. Of course I said yes and went over to Staines where he was staying with his 'brother' (this is a native American term, not a biological relation) Frank Billington-Marks, who built the x-wing cockpits on ESB (he is legit, he gets a credit) and is now known as Grey Wolf. ...
So this is our old friend Francis Billington now earning a living as a clairvoyant...
And Billington even went out of his way to defend his old buddy writing a letter on Jan, 15, 2010, see reply 4134235 dd 03/16/10 01:44 pm:
http://threads.rebelscum.com/showflat.php?Cat=&Number=3216480&page=0&view=collapsed&sb=5&o=93&fpart=3&vc=1Billington even wrote this letter using his 'professional' stationery with a header saying he was "Francis Grey Wolf Billington D.D - Psychic Counsellor and Writer", claiming
"... My professional name is Frank Billington-Marks ...
During my time in the industry I worked as a Prop Maker and Set Dresser first on the Star Wars film "The Empire Strikes Back" followed by "Return of the Jedi" as a prop maker ..."
The footer of Billington's stationery reads:
"Fellow of the association of professional Clairvoyants
Doctor of Divinity, Trinity College UIC Delaware
Honorary Member of the Blackwater Tribe of Lower Muskokee, Florida, USA
Fellow of the Psychic Circle
Honoured Signatory of the Sal Foundation Book of World Peace
Member of the British Association of Telephone Psychics and Astrologers"