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kinda think there is a possibility that high pressure and loose oil viscosity may cause a bearing to spin, it comes down to physics. IF the clearances are to loose, the thick oil circulating at high pressure, may cause such a "drag", no idea what to call it in English, but the forces at play get so high, that it rotates the bearing?

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Bearings are "indexed" so they won't rotate. One reason of what causes a spun bearing is metal to metal contact, or, lose of oil pressure. Your theory may be valid, I'm no physisist, but I'd have to see documented proof.
My bearing clearances are .0025", which is in line for my type of engine usage. Nothing exotic, here.