The tool damages the pin and you will need a new one. Reinstallation of a replacement one is easy; as the carrier, once aligned, will provide a guide for the pin. For the FW, if you were to need to remove those for resurfacing, you could reuse the pins, as their function is anti-rotation of the press plate. In the case of the rear main seal carrier, the dowel pins are for alignment. They must have a smooth cylindrical shape to do their job properly.