I think somethings lost in translation there. The mind and body coordination principles he did get from shin shin toitsu do. His Aikido principles based on those then he created. Two different things.
I think that it's clear that Tohei felt that much of Tempu's work elucidated what he had seen from Ueshiba.
OTOH, coordination of body and mind is a phrasing that predates Tohei's involvement with the Tempukai, and even predates Tohei - Ueshiba mentioned it several times in the 1938 manual Budo (in the very same context that Tohei used it in), which was published two years before Tohei even started Aikido.
What's your source for arguing that those principles came from Tempu and Tempu alone?