I used a flat jewelers screwdriver. Find the end of the spiral clip, push the screwdriver under it, twist slightly to lift the end of the clip over the end of the pin, run the screwdriver around the clip, and pull it off.
No hammer required and the clip should come off in about 30 seconds.
Retired USAF, IYAAYAS!
2008 V-Star 1100 Custom Bobber project
2011 Crimson XR with Forged Highway Bars / Hard Bags / Passenger Backrest, Ness parts including Smooth Layback Plate Frame/Mount / Rad 3 Mirror / deep cut grips / drivers floorboards /shifter peg / brake peg / passenger pegs. Witchdoctor black rack, Lloydz filter / timing wheel / VFC III, 7Jurock windshield, Drag Specialties seat.