You know, if a particle enters off-center into a spinning-asymmetrically-generated-hyper-jointed-singularity-pair it may (or may not) emerge at the other side of the spinning-asymmetrically-generated-hyper-jointed-singularity-pair at a point in time prior to the one in which it entered the spinning-asymmetrically-generated-hyper-jointed-singularity-pair, not to mention that it's anti-particle may (or may not) have been left behind at any number of trillions of light-years in distance, then, if you adjust the spin of the anti-particle, the particle would have to reverse it's spin by a proportion exactly inverse of the given and corresponding anti-particle adjustment and simultaneously, but before you actually adjusted the spin. Sooooo....You could, in essence, not only violate the laws of causality but also bypass the speed-of-light-limit and generally mess-up entire eons of weekends for galactic civilizations just about everywhere in existence. (Or not.) Of course, this all gets blown to hell if you suddenly decide to scratch your quantum ego instead of adjusting the particle spin...

Timing is everything, man!