Pretty much as TheIronGolem said. I went ahead and updated the .user file to make the changes in the Tags for you. I fixed some Source issues I found and scripted the "Cura Te Ipsum" ability also.
Here is the type of script that was needed on the archetype. This removes one disciple and adds a different one:
Code:
~ Remove Broken Blade and add Sliver Crane
perform hero.childfound[mHelpPWMdc].delete[Discipline.BrokenBlad]
perform hero.childfound[mHelpPWMdc].assign[Discipline.SilvrCrane]
The above causes the Medic Maneuver tab to no longer display Broken Blade and instead show's Silver Crane.
See attached for the updated .user file.