Don't be a tw@t. It doesn't matter what it sounds like or what the reason is, witnessing it isn't nice. Simpler to cut the power & delay trains rather than people being left with images they can't forget.
I've just got to say that unless you've witnessed someone falling from a platform & being hit by a train & seen & smelt the aftermath then stop moaning about the train being delayed. I have no idea what this incident was about but delayed trains are better than seeing someone fried (for want of...