In the context of my point, it was specifically geared not toward those that totally recant, but modify their theories as more study on their field progresses. I would venture to guess that more scientists modify their theories on their fields as study as a group progresses than do theologians.
Not that I have numbers to back it up. The point was those who dictate religious tenant claim infallability without review. Science welcomes review and "being wrong" to further understanding.
Theology has some traits in common with just about any non-empirical field, I think. If your field of inquiry is one where it's relatively feasible to carry out experiments that will yield objective information about the subject-matter, you have the luxury of being able to confidently and frequently modify your theories. I'd agree that probably scientists modify their theories about their fields more rapidly and often than do theologians, but I'm not sure what conclusions we should draw from that fact.
In more metaphysical areas of inquiry, most of the time we can't tell for sure when someone ought to admit error (except, perhaps, where the error is one of formal logic).