I saw some d*cks nearly do the same thing to my wife a few years ago during the Poto Trail Marathon. I was spectating and they thought they had the right-of-way. I told them to slow their roll and quit giving mountainbikers a bad name. They pretended not to hear me.....which I know wasn't possible with me yelling at them from 3 feet away.
"Falling down the mountain
End up kissing dirt
Look a little closer
Sometimes it wouldn't hurt" - INXS - Kiss The Dirt
Cross Country Cycle Racing