Well, you are about up to my 'Nine Lies' original post about WK '73. Wallace Black Elk was indeed a central figure inside the village, despite his more recent fall from grace.
WBE has denied knowing Watson much less interpreting Watson's 'buffalo on a rope' vision, as Watson has claimed. The vision story is contradicted by much internal and external evidence; Watson appears to have made it up in bits and pieces starting about 1977.
Here is a CERTAIN link with more. Jim Craven has done the main scholarly debunking of Watson's claims.
http://certain-natl.org/racism_in_the_ar_movement.html
MIB, know anybody in Toronto who wants to bust a prominent journalist as a liar and accomplice of Watson on this fraud? Hint: he claims to be Indian by virtue of an old family story that his great grandfather married a Cree womman. Also he sweated once and it was good.
Winner of the Canadian Book Award and unsuccessful candidate for national office.