OK - I finally figured out how to open the rear hatch, after closing
it and it refusing to open again. Turned out to be "Operator Error"!
It really helps to fully understand the book on how the electric locks
work, particularly the rear hatch lock, because it has TWO locking
positions.

1) When the hatch is closed with the key slot in the vertical position
the lock cannot be opened with the electrical actuator. It must be
re-opened with the key by turning 45 degrees or so to the right, then
pushing the button in.

2) When the  hatched is closed with the key slot horizontal, the latch
will actuate with the up and down movement of the driver side door lock
button. Push it down, all locks including rear hatch lock will
latch/lock. Lift it up - all door locks including the hatch lock - will
release.  Under this condition, one can still can get out of the van and
raise the rear hatch by simply pressing the hatch lock button in until
it clicks on release.

If the vehicle has been locked from the outside at the driver door with
the key, then the rear hatch lock will be engaged

Keep in mind however, that if the rear hatch is slammed shut with the
key slot vertical, the electrical actuator will not work. Only the key
in the slot will release the mechanism.

--
John Rodgers
Clayartist and Moldmaker
88'GL VW Bus Driver
Chelsea, AL
Http://www.moldhaus.com