So when rerouting my rear brake cable, two wires untwined from the main cable near the pinch bolt making it impossible to get it through the barrel adjuster. I couldn't twist it back, so I decided to completely unravel the wire to the very end of the cable at the levers and cut it off from the terminal button. Now it looks like I have a spiral design of missing wire running up the cable. It seems that I still have proper tension and leverage when pulling the brakes.

Is it safe to still be riding with this cable? Or am I better off with a new cable?