I only heard Doc Thompson a few times when he filled in for Glenn Beck - and I do not listen to him much any more. I am trying to remember what I know of Thompson... never thought of him as a Heavy; can't see why reporting on a DoJ plane in Little Rock could cause him to be 'sanctioned', even as an Arkancide... a puzzle (for me.)
I think the train engineer saw him and tried to alert him or some such... I am not really that well informed about this. Glenn Beck seemed to just accept that he was hit by a train while jogging.
Read that Beck added that ear buds were reportedly on the scene. Though, yes, its fair to wonder who walks on a train track with your ears plugged?