When trying to identify the perpetrator of a crime, one looks for two things: means, and motive. What do we think the motive is of those sources who would seek to discredit the testimony of an individual who is apparently prepared to tell the story of where he got some forged documents? The motive would clearly seem to be: to intimidate that individual, in order to prevent him from telling his story, and by extension, to attempt to prevent the truth from getting out. Who would want to prevent the truth from getting out? It would seem to me, only those who have something to fear from the true story getting out. In other words, those who have knowledge of the crime.
It looks to be a summer of many interesting revelations.