Hi jobe,
You didn't take pictures of the scene and surrounding area did you? That may be a good idea for further evidence, at least if the events repeat in the future.
Have a look at the YouTube video for his response to the two comments posted there. Doesn't sound very friendly, especially the reference to the 9mm. I guess this tells you the type of people who are out there. I had to read the responses twice due to the poor grammar :-)