If Spong thinks that the author's understanding was wrong, this is a reason for Spong to reject the passage as incorrect. It isn't a reason for Spong to slap an interpretation onto the passage that doesn't reflect the author's intended meaning, as far as we can tell what that intent was.
People like Spong, and certainly those like myself, generally do not think in these terms of true versus false, right versus wrong, and so forth. There are layers of meaning rather than binary true/false statements in everything that exists, and certainly within the thoughts of humans no matter when they lived. It's really about differing and evolving ways to look at the same things.
I do not think saying a passage is "incorrect" adequately portrays this. More appropriately would be to say it is "insufficient" or "outdated", or "not relevant" to the way we talk about these things in a modern society. He feels no obligation to retain the way they talked about God then, now in a modern age. Hence the "liberal" versus "conservative" approaches. Consider it redeeming the baby from the bathwater of myth, or reclaiming the language from those who want to define it their own way from their point of view only. Those like us do not consider something has to be
factual in order to have
truth, no matter what area of life we look at.
This is precisely what prayer is quite a bit of the time. IMO, this sort of prayer is futile, but this fact doesn't change the intent behind it.
Actually, that's just a petitionary style of prayer. Prayer is more properly seen as a communication, or as communion. The intent behind it is communion with God, even if the immature person wants God to send them a puppy to make them happy. A child wanting daddy to get them a toy, is in fact firstly engaging in a relationship with their perceived parent. They are extending their beliefs, their hopes symbolically to the parent figure. Of course eventually as they grow up they just have a relationship with the parents as mature individuals, rather than begging them for stuff like they did when they were five years old.
And this just confuses me:
Given that he's rejected traditional concepts of God and is using the word in his own unique way, I have no idea what "God's image" is supposed to mean.
It's not a unique way. It's quite commonly used the way he does the world over. The radical theistic view of traditionalist Christianity is not the defining understanding of that word by any means whatsoever, both outside Christianity, and within it.