Thanks! Yes, dynamite is bugged. What's actually happening is it is colliding with the player's third person head model, so it bounces off your own head while throwing. I had mostly fixed this in a version I uploaded yesterday (it still can happen while sprinting forward) but then yesterday's version caused major connectivity issues and I had to take it down.
I will be fixing this and other bugs soon in addition to adding more content.
Also, great idea for damage fall-off on the dynamite.