It sounds like you got the ignition assembly out, but still trying to get the key to turn to remove the tumbler.

1. Try messing with the **** thing on the far end. Turn it and push it with the key in and the key out.
2. Open the hatch and take out the spring and pin.

Other than that, I dont know. I had to drill mines as well, but when I removed the assembly from the car the key turned with no problem.