The solution is that causal relations are a map, reality is the territory. You and I could very possibly have different causal structures in mind when we're talking about, e.g., moving billiard balls, and we can both be correct if we have different sets of information. There is only one reality, but there are many correct maps of reality, each one corresponding to a different set of previous information.
If I understand you, you're saying that causal relations are a (perhaps necessary) feature of the map but are not features of the territory. Is that correct? If so, it seems like the claim "the universe is a fabric of causal relations' is strictly speaking false, or at least it's only true if by 'the universe' we mean the map rather than the territory, which would be weird.
If it's worth saying, but not worth its own post, even in Discussion, it goes here.