You can grind the pin and get the assembly to move away from the steering column but the wires are also locked to the assembly and if memory serves me the actual switch is locked in place making the wire harness and switch non removable without turning the drum. The drum must be turned to remove the armor shield using a .o5 pin to trip the latch. This thing is WELL MADE and there fore EXPENSIVE to cut up. Sometimes a new key will turn it that one last time and it can be saved.

If you are lucky enough to get the drum out and then try to run it with a screw driver the latch will trip locking the steering wheel. You can move the latch back in position and use a screw driver to turn the assembly back to the right and replace the drum (right picture above or several posts back). It is not safe to drive with things jammed into the locking assembly unless you want to be unable to turn the wheel at some time or other. You could just remove the whole lock assembly and use a screw driver to turn the switch whenever you want to start it.

Good luck