Suppose I returned to Orthodoxy.
How would I be 'welcomed'.
Forever marked an apostate.
Made to undertake great penitence.
Placed under some kind of special watch.
No to the three in red. If you returned, you'd be received through profession of faith and chrismation. Traditionally this would include a special chrismation either for Anglicans, or for former Orthodox.
For a friend of mine who left Roman Catholicism, there is a special chrismation "service" which is the normal service, but that asks the person to renounce specific doctrines in the Roman Catholic faith. There might be one for Anglicans or one for former Orthodox, but I don't know. I only see this done for a chrismation of just 1 or 2 people, if it's multiple then I think the Priest uses the standard service of chrismation.
As an example of this "specific chrismation service" that is done for Roman Catholics (and possibly others), it'd basically be like:
Q. Do you renounce the incorrect dogma of the procession of the Holy Spirit from both the Father and the Son equally? (usually it's longer and more specific than this)
A. I renounce it
Q. Do you renounce the incorrect dogma of the supremacy of the Pope over all Christians and that only he is given the legacy of St. Peter and his confession? (again, not actually what it says exactly, but kinda similar and longer)
A. I renounce it
and so on with other doctrines like Papal Infallibility, Purgatory etc...
I don't know, but they may have something like this for Anglicans. But it's up to the Priest whether or not it does that specific chrismation or does the standard.
What about those outside?
I don't understand this? If you mean your Anglican friends, there isn't any issue, you don't have to give up friends just to be Orthodox. I still regularly visit with my Protestant friends & family frequently.
Would I have to make a clean cut from the Anglicans?
Yes, by this I mean you could still attend Anglican services, but you can't take communion nor any other sacraments. You also cannot serve in their church (like as an altar server, deacon etc...) and I think every Priest would advise that you be very cautious not to sing hymns/pray prayers that are heretical (with many Anglican groups this may not be too difficult, with the more liberal groups it may be tough).
I know, I know, these are "ask your priest" questions, but I speak to you as lay persons and your experience.
As for now, I trust in the mercy of God and wait for Him to force me if need be.
In my experience, I've been Orthodox for 4 years now, and I've still attended Protestant services and a Roman Catholic service. I still regularly attend dinners with my family members and friends from my old Protestant Church.
However, even if I attend church with my family members, I always make sure to be careful about the hymns I'm singing and I'll simply stop if it is theologically compromising. Same for prayers, I'll bow my head out of respect, but I typically don't necessarily pray "with" the leader as he does. The exceptions to this are the Creed & Our Father, and with the Creed I obviously omit the "and the Son".
However, that said, attending Orthodox services is the single priority. I wouldn't skip going to a Liturgy on a Sunday just to go to a Protestant or Catholic service.