A spining thing can be thought of as vibrating. In the case of quantum spin, the Larmor frequency and Nuclear Magnetic Resonance exemplifies this. In spirituality, vibration is used to, amongst othings, illustrate 'multi-dimensional' reality. There are two issues pertaining to spiritual.
1.) There is the epistemic part of spirituality whereby we are often forced to use analogies to depict a possibly 'unfathomable' scenario.
2.)We know from our experience that anything vibrating soon whimpers and stops vibrating altogether, yet it can be said that the 'spiritual' vibration must never whimper. The concept of Quantum Spin 'kills' the above two issues with a single bullet!
Physicists cannot fathom quantum spin. Specificaly nothing is literalisticaly spinning. However, if we think of the magnetism that produces the Stern-Gerlach effect as to be due to a literal spinning of charges, then we espect precession to exist. Sure enough, it exist, Lermor Precession. Call such a way of knowing things 'x-knowing'.