I would also suspect the pink wire with light green stripe(looks like gray stripe on mine) is making contact with dark green with purple stripe wire which is constant (+) at the DDM.
Or one of the door switches has gone bad. Either way, the door locks are getting a 12 volt source from somewhere.
(edit) I wouldn't rule out the remote accidentally unlocking the doors. Long time ago, I've had a TV remote with a mind of its own.