Board Thread:Theories and Speculation/@comment-26817875-20150812020839/@comment-25122992-20150821113350

JouXIII wrote: Remember Hiruzen? He got his upper body destroyed and yet he regenerated it back(took a lot of time, but still). Because at that moment Obito had no full control over Juubis power and didn't apply to the TSB Yin-Yang Release, which nullifies ol types of the ninjutsu Edo Tensei including. When he ripped off Minato's arm, he had already gained this control and Yin-Yang Release respectively.