The Orthodox view of re-marriage is simply that, although the sacrament of matrimony is for life, out of mercy and as a concession to human weakness the partner who did not wound the bond (ie the victim of another partner's adultery) should be given another marriage. As Jesus said with Moses, it was out of the people's "hardness of heart" that he allowed divorce, not because it was good or right in itself (it objectively isn't).
"Mercy triumphs over judgement" and I might add legalism.
The second marriage in orthodoxy is usually a sombre service, not joyous, to remind the couple that they are only marrying again because of human sin and divine mercy, not because it is "perfectly ok" to do so.
Now, whatever one might think about the soundness of this Eastern practice, it does make Orthodoxy look - as a whole - more concerned for human weakness and more compassionate than us. Whether one likes it or not, that is how it makes us look. Victims of abusive partners feel wronged, as if the church has no compassion for them, when their "partner" might be off with some other gal living it up and they are in misery, consigned to life-long loneliness.
Given that the Orthodox churches have valid sacraments, liturgies, saints and so forth; I highly doubt that the Holy Spirit would have permitted these churches to continue with this practice if it was illicit.
It isn't the way we do things in the Latin tradition, however, perhaps we should start being truly "universal" and quite thinking that "Latin = the right way". The way the Catholic Church has approached the issue is through some very liberal interpretations of annulments. I have seen some that are truly concessions to human weakness rather than founded in legalistic fact. People might not like to admit it, but through our often very liberal annulment process, we almost already have a Latin equivalent to the Orthodox "oikonomia".
Just sayin' :rolleyes: