I like the book as a case study on launching a new kind of conversation into a world that's not exactly waiting with baited breath for this new conversation: the pitfalls and the traps to avoid. I don't claim that this is Roustang's entire purpose. He is interested in exposing what the book's cover calls "fundamental conflict among the basic tenets of Freudian theory", thus "psychoanalysis can never be effectively administered through the means of a psychoanalytic association or any sort of collective body". This is supposed to pave the way to his own new theory of psychosis.
The original (French) title of the book is "Un destin si funeste", which translates to something like "So disastrous a fate". From Roustang's account, I'm rather more struck by the sudden emergence of all these thinkers, all within a train ride of Vienna, all with similar new conceptions of Man, representing such a clear break with the past, as if they were listening to currents on the same wind.