Rick, OK, Curtis,
I, too, agree with your conclusions. It took me a number times of watching the clip to figure it all out. Seeing the switch lined for the siding was my first clue that the "camera" train was in the right. Then I picked up on the sequence and timing of the signals and it all made sense.
When I first got the clip, I was watching it on my laptop which does not currently have audio. Weeks later, once I got home, I forwarded it to my home email and got to hear the whole thing. What I don't understand is why there is absolutely no conversation recorded. The camera mic is clearly picking up the sounds of the brake applications but absolutely no conversation.
Thanks,
Rob Gardner