ROCOR and ROC are still not united completely I believe.
Yes it would open a can of worms.
Unfortunately ROC has a history of having abetted KGB against ROC members.
Where do you think it stands?
I honestly don't think the ROC will push anything against the OCA. The EP claims Russia did not have the right to grant autocephaly because they didn't have jurisdiction over the Americas. If they come back and claim it is *not* autocephalous, they are admitting they didn't have the power to grant it.
The OCA is kind of a mess right now, anyway, and the Antiochians are, by far, the fastest growing EO churches in the US. The Antiochians are much closer to the EP than the MP. If the MP pushed, he'd lose what little influence over the US Orthodox he already has.