A conventional trapezoidal utility razor blade (like one you would find in a box cutter) fits perfectly between the rows of pins. The thickness of the blade matches the necessary gap between the rows.

Don't push down into the substrate with the blade, as this could mar the surface.

Gently slide the utility blade between two rows of pins.

If bent pins block the blade's path, gently bend them upright using the sharp corner of the blade, going one at a time.