Well here is part of page 8W-65-4 of the '04 service manual. Looks like I can cut one BR/GY wire and prevent the door-open unlock function. That would allow locking from the console but might also prevent the dome light from coming on.
ps suspect the anti-theft (if there) gets upset about improper unlock and not lock. Would really like to find out the history but seems to have been through auction a few times and may be why was cheap.