Board Thread:Episode Discussion/@comment-2601:189:4381:65F5:E9B8:65E4:F9CC:EB09-20171213045937/@comment-2A02:C7D:69E5:5500:975:C991:45EC:3409-20171215211603

The thing is, Blake pretty much did the same thing when Adam cut her Shadow clone's head off as she was protecting Yang. Doesn't explain how it came out of nowhere in either scenario, but I personally don't think it's totally unprecedented.