Or, there is the alternative explanation that the “Angel of the Lord” in the OT was just a form that Christ appeared in before his earthly incarnation, hence there was no need for correction.
That's a bit of a stretch for my taste. Even Christ referred to Adonai as "the Father." There is speculation also that Christ appeared to Avram as one of the three visitors. It's an interesting idea, but I prefer to leave that kind of thing alone. Christ was born human. His soul preexisted his form, but that doesn't mean His persona did.