First of all,
who the piffle cares what the Eastern Heterodox say about... anything really?
They might not look so bad in our day, compared to the NewChurch, but the East has always been a den of depravity and filth.
Secondly, about "abuse". What does that even mean exactly?
One has to distinguish between genuine, gratuitous physical violence and the much needed, righteous, justified discipline in the context of Husband-wife dynamics.
Thirdly.. Sacramental Marriage is indissoluble. It's not a hard concept to grasp.
Are we playing my-little-mini-lay-family-synod here or what?