This is way different than just a clunk. Blown CV clank is loud enough to make you think your front wheel just came off, and there is a constant grinding and vibration.
The failure happened on a very technical section of trail when a stump was stuck between my rear axle and muffler. Additionally my front drivers side wheel was unloaded floating about 1/4" off the dirt and when I put it in reverse and turned the wheel it made contact with a large bolder and that is when I heard a loud bang. The CV in this situation was at it weakest and it broke. This failure was 100% my fault and could have been prevented if I would have accepted I needed yanked off the stump instead of trying to do it with the relatively weak IFS.