Here is an interesting report from TDG on the topic:
With the new public attention on the story, a number of the individuals involved have thrown some doubts on the veracity of Ronson’s account.
John Alexander has long disputed a number of the claims in The Men Who Stare at Goats, and in a recent article (“They Stared at Goats Because…“) states that even the title is incorrect, as the goat in question actually died after being struck using a martial arts move. Meanwhile, Stargate remote viewer Paul Smith, in an Amazon review of the book, says that while Goats is an entertaining read, it is not an accurate summation of the actual history – and at times, uses plenty of ‘artistic license’ in presenting material. And Jim Channon, whose ‘First Earth Battalion’ idea is central to much of Goats (and who has been very sporting and good-humoured about his treatment in the book), has a press release on his website which says that “Ronson's tongue-in-cheek account is classified as a work of 'non-fiction,' but it is so loaded with speculation and inaccuracy, it sets the stage for much of the confusion.”