It's a great article Bill.
I've tried to wrap my head around the idea that someone at the posts could have lied and "pretended" they heard a transmission. I maybe don't give this argument enough credence because of two things:
1) The existence of the Mexico City tapes the FBI listened to on Nov. 23/63 that did not have LHO's voice on them. This suggests to me that there was someone actually there to physically "impersonate" LHO and Duran.
2) The nature of the transcripts that we do have seem to me to be very choppy and stilted. They are a bit cryptic in places - needlessly so if you are just forging text. Its much easier for me to visualize that type of dialogue being spoken spontaneously, as opposed to written. Then again, the Oct. 1 call does sound a touch too scripted. Its hard for me to envision Obeyedkov stating a phrase like "Kostikov, he is dark?" as an opening line in his conversation. Sounds too neat - too cloak and dagger.
The more I think about things, the more I get confused. I keep coming back to the idea that there has to be a list that we can get at revealing who was working on those days at the Listening Posts.