Mark: I just removed the lock: Made two tools from a white coat hanger. It's exactly 2mm diameter and filed a taper on the end. The taper is just an angle like, maybe 60 degrees, so that it can push something out-of-the-way. On the other end I bent a loop in the direction of the taper so that I would know which way the taper faced. With my key turned to the accessory position "1" I stuck both wires in the two holes until they bottomed out. I could feel them pushing things out of the way. They went in like an inch and one half. The entire lock came out with the plastic face plate attached. The lock cylinder is surrounded by a strong metal case. The black ring you see from the outside is part of that case. The case is necked down and can be removed only after you pull the lock cylinder out. It appears that, if you can insert the wires, you will release the cylinder. To pull it out, takes maybe 2 lbs of pull. easy to do, if the key still has a head.
I can send you some pics, if you give me your e-mail address. Don't use force yet!