I agree to a degree, as I tend to want to get towards Paul's "authorial intent."
However, most of our theology is based upon Scriptural interpretation which is disconnected from the authors' original intent.
Isaiah never intended to speak of the virgin birth of the incarnate Son of God. But we proclaim that Isaiah tells us exactly this. Hosea did not have any intention of telling us that Gentiles would one day be included in God's covenant people through Jesus Christ, yet we proclaim that Hosea tells us exactly that.
(By the way, check out this
article sometime. I don't know if you've seen it, and if you haven't I think you'd find it interesting. If you have, ignore me!

)
I would contend that the very nature of the idea of
Scripture is that the reception of the text as
Scripture by the community which receives it as such is the means by which that text receives meaning and authority which the text does not have in its own right. We believe that it is not the author behind the text, nor that author's intent which makes the text Scripture, but the divine agent who lives and speaks within and through those texts, giving them meaning.
The Church of the Nazarene even moved towards recognizing this in 1928 when it stopped suggesting that Scripture "contained" the will of God, but that it, instead,
reveals the will of God. This is the fundamental difference between a "text" and "Scripture." When we make the claim that our Bibles are "Scripture", we make a theological claim about them which goes beyond textuality.
I'd agree. I don't think that I've suggested it means "the opposite of what the original intent desired", but that it includes more beyond just what the author desired.