That is the legalistic mindset of the west -- sin is something akin to breaking the law, rather than rejection of God. There is no love in it -- but simple (dis)obedience.
Along with that come the "canons" or laws and all the legalistic scholasticism of the west. And the more the Orthodox subtly succumb to it, the more they are drawn into the scholastic debates, where the focus is finidng the "correct" passage or quote rather than concentrating on how ungrateful we are to God.
It's not about our relationship with God, but about "pay, pray and obey."
I warned you that western theology is throughly legalistic in its language.
However, isn't a voluntary failure to obey the law nothing more than a rejection of the lawgiver? I don't see how this isn't two ways of describing the same thing.
Im sorry that no one has commented on my post here, which IMHO proposes a view of purgatory that the Orthodox ought to be able to accept: not as satisfaction, but as essential to theosis, and particularly to the divine freedom that theosis implies.