ok, let me see if i understood right. when using the key in the drivers door to unlock it only unlocks the drivers door. but the drivers door pin will unlock/lock all the doors. but when using the drivers door to lock it locks all the doors?
so you got a problem with the drivers door when using the key to unlock all the doors?
sounds like a problem around the barrel then. does the passenger side work fine? if so then take the door cards off and compare the two, passenger and drivers. sounds like a latch or something has come off or broke, so when you turn the key clockwise to unlock, it only does the drivers door. could be a vacuum line come off....
get the door card off and have a look, if nothing is obvious then compare to the passenger.....