[projectRDM]

First thing first. Buy a flare nut wrench so next time you remove a brake/clutch line you won't strip the fitting. Hit yourself in the face for not doing that before you tried to remove the line by using the wrong tool.

Now that you have stripped it, go online and find a pair of Irwin 7LW vice grip pliers. These are by far the best tool you can own for dealing with brake fittings. Clamp it to absolute hell and remove the fitting. Proceed as directed from there.