zimbop,
I've noticed that I don't have to do the three handed kabuki dance to lock the passenger side door on my 2dr civic (note I do not have power locks).
Depending on how motivated you are to rid your car of this feature, you could pull the door panels from both driver and passenger side doors and insptec the latch mechanisms to see what's different between the two.
from the above pic, you have to lift the door handle (B) on my car in order to depress the door lock. Which leads me to suspect that there is some small widget on the driver side latch that is not present on the passenger side latch.
Potential offending widgets shown in/around arrow in pic below:
not having dismantled my own car, I'm really on guessing as to whether or not the widget is on the outside of the latch, or internal...
hope this helps!