Devin, we believe that the Church is made up of those Christians gathered around their bishop to celebrate the Eucharist. I'm not aware that we make a distinction between those of "right belief" and those of "wrong belief" within the Church and say that those who don't hold to right belief are invisibly outside the Church. If you're in communion with an Orthodox bishop, you are in the Church. If you're not in communion with an Orthodox bishop, you are outside the Church. It's that simple.
Seeing that Jesus had no intention of starting a church your thesis smacks of self-righteous ideology - which is one reason why I hesitate to commit to Orthodoxy. I see enough hypocrisy in everyday life without having it thrust on me by those who enjoy claiming the high moral ground.
Truth is that 'apostolic succession' is a invention of the nascent church to create some sort of authority and order. I can accept such moves - any movement that becomes an institution needs an organization. But to then apply that organizational aspect as something that determines who is, or who is not, 'in the Church' i.e Christian, is unsupported except for those who maintain ideology is more important than theology.
There are, in fact, more Christians 'outside' the Church than in it. The fact that the Church is one, holy, catholic and apostolic, does not mean that there can only be one organized 'church'. Given the diversity of humanity such would be impossible. The Church is one, holy, catholic and apostolic, from what the 'members' believe - not from some political manifesto than demands allegiance to some flag.