Greg, I bet the "blowing apart" thing mostly applies to applications like sailboats where much of the line is up in the air away from close up daily visual inspections, unlike our friction hitch.
It just "blows apart" because there is little (no) stretch in the rope. In a nylon rope, if one strand is a little loose, the strands around it will stretch until all the strands are holding the load. In fibers with no stretch, this can't really happen. So if somehow only a few strands are holding the load, they may quickly just tear, then the strands around them will try to hold the load, but having lost the help of the recently torn strands, they too will now rip, and thus the blowing apart factor.
Mark's right. The rope will just slowly wear away, and one day you'll look at it and say, "hmmm, let's get a new one."
The vectran core is stronger than some brand new 3/8th sta-set, that's for sure!
love
nick