Here's how I did mine, this may not be the correct way but it worked for me, I have no idea if this is then road legal but as my car is strictly for track it doesn't affect me
I'll start with the ignition barrel already out of the car like so
View attachment 139498
Its the prong bit that needs removing
View attachment 139499
First off remove the two torx screws on the back of the barrel (t20 torx, same size as the grub screw for the barrel itself), and then carefully slide the metal collar from around the steering lock, once this is off the wiring part will also come off, as the metal collar holds this in place also, leaving everything like this
View attachment 139500
So now you have access to the locking part itself and its just a case of cutting the big metal bit off, I chose to go through the thin part as it was easier, probably best to use a hacksaw so you can control things
View attachment 139501 View attachment 139502
Now its just a case of refitting everything and putting back into the car, start off by returning the wiring and then sliding the metal collar back on, screw together and job done, no steering lock.