This video shows some of the different materials they use for these things and a few others, the demonstration is a good representation of the two titanium end caps pressing into the carbon fiber tube but don't show the forces applied to the sides of the tube so not a complete picture but will give you some idea of what it would have experienced and why I think the two end caps may have slammed together...
I am not causing global warming, I am just trying to hold off a impending Ice Age!
