His translation was all correct except that line, and the reason why it's like that is because that line was just really confusing in japanese.
And hey, maybe the one who is wrong with this is me, i'm human and i make mistakes.
Of course, i'm more sure of this being a technique called 'Juuki X Calibur' because the person who posted the post in 5ch is saying so, but who knows. TBH is part of fault of the spoiler provider for not saying who uses it and how it was readed since the beginning