"K can set me straight if I'm wrong, but I don't think that would be enough. If I understand correctly, in addition to anathematizing TEC and ACC, all women with "orders" would need to renounce them. Right?"
I think every clergy"person" would have to renounce their orders. Only the men could be then ordained. Its possible that the men could simply be vested, but I doubt it, the early 20th century recognition of Anglican orders notwithstanding. And there'e be no married bishops.
Certainly priestesses would not be admitted as validly ordained.
If, and given all that the Anglicans have done since the days when Bp. Grafton of Fond du Lac and St. Tikhon were holding talks, it's a *very* big if, the doctrinal issues, and issues arising from the misbehavior of TEC and a few other Anglican provinces in ordaining and consecrating women on the one hand, and notorious sinners on the other, were all resolved, it is not so clear that mass renunciation of Anglican orders and ordination in Orthodox orders would be needed.
There is precedent in which a whole diocese of the Assyrian Church was received into the Russian Church by a concordat between their bishop and the Church, no ordinations, no chrismation of members, just an agreement establishing communion.
Clearly the purported priestly orders conferred upon women are void. But there is no strong argument for the invalidity of ordinations of women to the diaconate.