The part in bold I absolutely agree with. The underlined part I disagree with. If something contradicts a prior teaching of the ordinary magisterium (as opposed to being a further explication of it), then it is a situation where, as you say, "Houston, we have a problem", and is, by definition, wrong.
The current "Quote of the Week" I have posted on my cube at work is from Flannery O'Connor: The truth does not change according to our ability to stomach it.
I think we actually agree. I was using “contradicting prior teaching” as an example.