You actually need to remove the fork before you pull the trans. If it's the same as a WRX, there will be a 10mm hex cap on the driver's side of the trans, near the slave cylinder. You remove this cap, and there's a big pin inside of it that the clutch fork pivots on. If I recall correctly, a 6mm bolt screws into the end of this pin, which allows you to pull the pin out, removing it from it's bore in the middle of the clutch fork. Then you just grab the top of the fork and pull it up out of the throw-out bearing. You'll know when it's free 'cause it'll just flop around in the hole there, but you won't be able to remove it completely. Just be sure it's out of the throw-out bearing, and let it rest in the top of the trans.
When you go to put the tranny back in, I'll tell you the ancient Japanese secret for putting it back!
