I found it
here (under "Bigfoot, Big Con").
Okay, let's get that into context:
"Some of the unanswered questions are likely to remain that way because, as Long concludes, "The Old Bigfooters hadn't done their job. They failed to nail down the essential facts in the first few days after Patterson returned to Yakima from Bluff Creek." For example, no one attempted to discover when the film was actually shot, or with what camera, or where it was processed. Several contradictory accounts of the film's provenance emerged at the time, and no one seems to have dug very deeply into any of it. Early sasquatch researcher Rene Dahinden agreed, telling Long, "There are real dumb t'ings I should have done. The problem is that ve didn't do our job." (Long's phonetic transcription.) Interestingly, Dahinden eventually acquired most or all of the rights to the famous film, which he held until his death. For its part, the modern cryptozoological community has been swift to criticize Long's book. The internet is humming with chatter about and condemnation for this expose of one of cryptozoology's crown jewels.
The major counterclaim is that Long fell victim to one or more hoaxes when interviewing witnesses. Particular ire is reserved for the two most damaging witnesses: the man who claims to have built Patterson's Bigfoot suit (costume designer Phillip Morris), and "the Man in the Suit," as he has been called (a high school friend of Patterson, Bob Heironimus). Unfortunately, these two witnesses disagree on key details regarding the suit--something Long spends far too little time examining. Furthermore, after 37 years, there is no known physical evidence to back up the claims of either man.
I met with author John Kirk, President of the British Columbia Scientific Cryptozoology Club, and asked for his impressions. According to Kirk, "the trouble is that Bob Heironimus isn't telling the truth in any way, shape, or form here." Like many cryptozoologists, he believes that Heironimus is himself perpetrating a hoax. Kirk claims that his organization discovered the identity of Heironimus (then an anonymous source claiming to have worn a suit in the film) back in 1999. He also alleges that their investigation into his background uncovered "a woman who was present when Heironimus and two other individuals concocted this scheme [to falsely claim Heironimus wore the suit] in her living room so we were aware five years ago that this was a hoax, and we do not know how it was allowed to grow to this level."
Leaving aside this woman's specific allegation, Kirk's primary gripe with the book is shared by many cryptozoologists: Heironimus claims that he wore a horsehide suit built by Patterson himself, which he describes in modest detail, while Morris claims that Patterson bought and used one of his commercial gorilla suits--which he describes in precise detail. Surely, say critics, one or both of these claims must therefore be false. Since neither is clearly supported or debunked by the available evidence, both must be suspect. "
http://www.ntskeptics.org/news/news2004-04-25.htm
I'll see what I can find in the book, but I have trouble getting past some of Long's rhetoric, such as when he refers to Roger's failure to return the camera on time as "theft".
In the early days of the film, much effort was put into getting the film viewed by scientists (an odd thing for hoaxers to do - compare to the recent Georgia fiasco). Pinning down "when the film was actually shot, or with what camera, or where it was processed" may not have seemed important (and why would those things be important today, except to collectors of PGF trivia or those who think it's a hoax?). We know two out of three now, don't we? Within the next two years the film had been taken to scientists and Disney and Universal.
Why didn't the skeptics of the time uncover evidence of a hoax? Roger was alive to answer questions and produce one or more suits (of dynel or dead red horse) fitting his neighbor.
Dahinden may have wanted to make a lot of money off it, but he put a lot of money into it (the trip to Russia, e.g.). He was a poor man. He was also incensed that a relative newcomer came up with this after he'd spent over twice as long in the research himself. He became very bitter about scientists in general.
After the papers of the "realists" were rejected for the book following Halpin's conference (the cibachromes were supposed to go with Bayanov and Bourtsev's paper), Dahinden blocked publication of the joint paper in another book. He threatened legal action even when he didn't have the rights.
Dr. Donskoy's conclusions were printed in his book (with Don Hunter). Byrne published Bayanov and Bourtsev's paper in The Search For Bigfoot, Monster, Myth or Man and Dahinden had a fit.
Dahinden may have been trying to keep the film a mystery because it would be more profitable that way.