The gravity theory is a half logic, attraction theory only, derived from modern day sciences philosophical guess that good is bad and bad is good (+/-...-/+). This theory neglects the electromagnetic repulsion forces that are happening in nature (-/-...+/+).
The electromagnetic fields that produce the + and - forces in spinning objects is the same field, yes, but everything spins in the universe at both the macro and micro levels and produces these 2 equal but opposite forces which interact with all the other spinning objects in the universe in the following combinations (-/-...-/+...+/-....+/+).Unless somebody can prove otherwise. The only way to balance these forces of nature is by the formula +/-=+/-.
When matter enters a hole it doesn't stop spinning, therefore if matter were to exit into all the multiple holes at the center of all the galaxies out there then these holes would not stop spinning because they remain within the electromagnetic fields which are causing that spin.
As science cannot prove otherwise, then this is as sound a theory as anything out there at the moment and I will challenge any scientist that thinks not.