Sure, W126...

Mine is a 94 E320 and the dash may be a bit different. The black trim comes off easily, its snapped in and held with velcro on one end. Then the lower dash panel is removed with a few hex screws and phillips. In my car you can cut the black security cover off about a quarter inch back from the round collar around the lock. My lock like most was already broken between the key slot at the face and the inner mechanism which drilled out rather easily. This easy drilling is in contrast to the main barrel of the lock which is pretty tough steel but can be drilled.

Hmm the front half just spin..I suppose it would but the front part..(Not nearly half but about 1/4 inch) mine just fell off once the black ring was cut off. Its a separate face piece and appears attached with a drift pin on my new lock. This front half (about a quarter inch thick) might be easily snapped off with a screwdriver or chistle, but if yours is free to spin I believe its also detached from the main cylinder like mine was. In that case it will fall on the floor once the black sleeve is removed.

Let us know!

Happy to chat in person if its needed to assist..