Chainlube suggested this earlier… you can carefully cut the spring wire sheath to expose more cable.
Make a mark or wrap tape where you want the cut. Pull the silver end cap down out the way. Cut some of the black plastic outer case off to expose the metal sheath. Then use a dremel and make a cross cut on that wire. Go in small steps. The last little bit you can pop it off. Thing is you can not cut or fray the inner cable.
You’ll probably have to unroll the cut piece off because the cable end will not let it slide off.