I watched a Thunderfoot video on youtube last night and he is of the opinion that the carbon fibre did not fail but rather the joint between the titanium endcaps and carbon fibre body due to the differential rates of compression due to pressure. He estimates that the diameter of the carbon fibre cylinder would be around 1cm smaller than the titanium cap at those depth. Repeated dives would ultimately cause the glue to fail and cause a leak which would flood the sub within minutes. The end caps would blown off due to a water hammer effect.
