I am actually not sure about Synods (and I am also trying look into it). I think it is important to know where they fit in the Magisterium. They are either part of the OM or they are not. We can’t decide that something is not part of the OM when the results are not to our liking (i.e. contradict prior teaching). If a Synod is part of the OM and we get contradictory teachings (not discipline)?
“Houston, we have a problem.”
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.