Spinning blackhole? Well, that is possible. But if blackholes are splinters of the point of singularity that went boom some billion billion years ago, and point of singularity is an absolute void, how would we know an absolute void is spinning? Crazy thought you might say, but I have this thought that absolute voids behave like solid. You know that will explain why even light/ photons cannot penetrate blackholes. It will explain time dilation occurs at event horizon of blackholes. It will explain why if you go into it, you will the past and the future of the universe at the same time. I will explain this in one of my posts later. Thank you for this wonderful imagination. Keep it up