Board Thread:Theories and Speculation/@comment-45444155-20200507075527/@comment-45444155-20200513033005

LegionZero wrote: No. Neutralization of Ninjutsuis an ability of the TSB using Yin-Yang Release. There is no nature energy in them therefore not Senjutsu

Obito ripped off the Minato's hand with his hand, not with the ball. So the neutralization was used by the body of the jinchuriki.