#1 - Can you disassemble the mic/ear piece next to the wires & "pull" the cable 1" or so into the headset thus protecting the damaged area - depends on how the strain relief functions (friction or clamping). The extra 1" would be inside assembly protected and no disconnecting/reconnecting need take place.
or
#2 wrap area in Rescue tape - is flexible but will be visible.
Good luck.