I guess this thread isn't too
old to be dug up. It was either this or begin one from scratch.
So, assuming the article in the OP is accurate, what sort of theology could possibly underscore an idea of "Orthodox indulgences?"
From the Vatican's online catechism
1472 To understand this doctrine and practice of the Church, it is necessary to understand that sin has a double consequence. Grave sin deprives us of communion with God and therefore makes us incapable of eternal life, the privation of which is called the "eternal punishment" of sin. On the other hand every sin, even venial, entails an unhealthy attachment to creatures, which must be purified either here on earth, or after death in the state called Purgatory. This purification frees one from what is called the "temporal punishment" of sin. These two punishments must not be conceived of as a kind of vengeance inflicted by God from without, but as following from the very nature of sin. A conversion which proceeds from a fervent charity can attain the complete purification of the sinner in such a way that no punishment would remain.83
1473 The forgiveness of sin and restoration of communion with God entail the remission of the eternal punishment of sin, but temporal punishment of sin remains. While patiently bearing sufferings and trials of all kinds and, when the day comes, serenely facing death, the Christian must strive to accept this temporal punishment of sin as a grace. He should strive by works of mercy and charity, as well as by prayer and the various practices of penance, to put off completely the "old man" and to put on the "new man."84
Does Orthodoxy draw these kinds of distinctions? I know St. Nicodemus the Hagiorite kind of
does, but in the text I've seen he makes little in the way of elaboration. The text that is quoted in the article speaks only of "forgiveness of sins," not of remitting temporal punishment after eternal punishment has already been forgiven.
Outside of this kind of finely parsed context, the idea of indulgences doesn't seem coherent.