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[MarkE]

prexactly @mark E.exactly.nothing is stopping shifting of gas,spontaneously!! .NOW, lets disconnect the connecting wire between the two half-cells,whats stopping the system from returning to original stability,before we short-circuited?

Are you suggesting that when the external circuit is removed that the species still in communication with each other do not continue moving towards equilibrium?

[profitis]

the species was in direct communion before we switched on,remember mark E. Oxygen gas was freely available to diffuse toward equal concentrations into both electrodes prior to being in electrical contact.yet it didnt.it was a very stable and persistant nernst potential.it was stable.no self-discharge..

[profitis]

the species does continue toward equilibrium after switched off @mark E.in the opposite direction.we disturbed the prior equilibrium by electrical contact!

[MarkE]

the species was in direct communion before we switched on,remember mark E. Oxygen gas was freely available to diffuse toward equal concentrations into both electrodes prior to being in electrical contact.yet it didnt.it was a very stable and persistant nernst potential.it was stable.no self-discharge..

Profitis, a picture would be helpful annotated with the material concentrations. 

[profitis]

heres a diagram mark E.the system totaly stable as you see it with its different o2 concentrations,nernst potential.total gas communication between electrodes,equal pressure.zero self-discharge over time.