Good stuff to know, but you're taking the LONG way around a simple problem! You don't need the origin point feature at all to do such silliness... Merely "Duplicate" your object once, and on the new part go into it's attributes. Along "X" position, just delete the "-", so that the new object is opposite the original, across the World Center. Then, Group these two objects. Lastly, go into the Multi-Replicate dialogue, and set however many duplicates you want, and then set the rotation to correspond, geometrically, to how many duplicates you want. Boom.