You haven't mentionned anything about the tail gate. According to this manuel here( I will show the electric diagram here as soon as I find a way to do that!)there is an actuator in the tail gate. On mine, if all four doors are locked and the alarm is on, I can open the tail gate without blowing the alarm and when I close it back, the alarm re-arms itself again.
With the spare out of the way, one would think that the tailgate could pop open when you unlock the doors, otherwise, why the actuator? Mine doesn't do that.