Hi,
I've never seen one of the cable chokers come apart, but I can see where it could. The last 1/8" of the cable choker looks like it has a little extra sealant on it, to prevent it fraying while the end is unsecured. It's likely this has been accidentally peeled/scraped off while putting tight-fitting
beads onto the choker.
Can you re-seal it -- perhaps with some
superglue? After re-sealing it, you might need to snip off stray ends. This should allow you to get the last beads on, and then fit the loose end into the crimp end.