Oh, BTW, the statement about the change in video quality is absolutely true. The story is in Tracking Apollo to the Moon.

Goldstone was receiving the signal during Armstrong's egress, but it was too "hot". The top end of the signal was being clipped. The television signal was encoded as a reverse image -- black was represented by a "peak" in the signal. Thus a hot signal would be clipped so as to render a lot of stuff as black, since differences in dark grays were being lost.

The solution was to switch to Honeysuckle Creek, whose signal was closer to the expected strength. This cleared up the video. Lindsay says it was about six minutes too early for Parkes to get a signal.

Also, the alleged Coke bottle allegedly occurs during Alrdin's mobility tests, nearly an hour into the EVA. This was long after Honeysuckle Creek had taken over, and Americans at this time were seeing the same signal as Australians.

In short, there still is very little reason to believe the story as told, but as with many rumors there may be a nugget of truth somewhere there.