Well, the force of the galaxies spinning (at insanely fast speeds)
"Insanely fast" as in 200,000,000 years per rotation? That's roughly what our galaxy does. It would be pretty tricky to get a collection of 400,000,000,000 stars that's 100,000 light-years across to be "torn apart" in just 10,000 years, even if things were moving at the speed of light. And our Solar System is orbiting at less than a thousandth of that speed.
Someone is telling you lies. It isn't me.