I just used a screwdriver as some have suggested. I don't know if all forks have this but on the one I was removing the race from it had a little gap under the race just deep and wide enough to fit a small-ish screwdriver in. I used a screwdriver that'll fit in that gap and very gingerly tapped the screwdriver with a hammer until the race expanded enough where I can fit the tip if the screwdriver about 90° from where I started, tapped a bit more from there and just kept moving around until the race is off.