Take with a grain of salt
I have found some guidance concerning this issue in an article by Craig H. Allen Sr Sep 26, 2012 “Be skeptical of rigid ‘in extremis’ dogma beyond ColRegs”.
I believe he provides some potential information as to the possible maneuver to port.
Using collision-inevitable position and the turning characteristics of the give-way vessel, there maybe a sound last resort reasoning as turn to port. Even though contrary to strict interpretation to the rules.