So come on, sharpshot, what did you do (and where was it)?
With the restrictions you mention above, I suppose I'd seriously consider shutting down the a/c and getting out leaving it where it was. Reason being it'd be the only way to ensure my own safety in a dangerous situation.
My only other thought, when you called back-tracking, is it possible he thought you were about to start backtracking from, say, a point somewhere off the runway at the other end, but had not yet started? i.e. did he know you were actually sat on the runway? What was the vis like?
EastMids, is there actually a rule forbidding a pilot to land when the runway is occupied? I thought it was left to the discression of the second pilot as to how much room was available/required etc. I've certainley seen it happen several times, usually on wide grass runways where the first a/c can pull well over to one side before the other lands.