What are the implications of weak-measurement on entangled particles, and how does that resolve the problem of non-superluminal quantum "communication"? If I understand correctly, entangled particles X + Y are basically in superpositions that are anti-correlated with each other. As soon as one of the pair decoheres (or "wave function collapses"), say by an attempt to measure X by Alice, the other member of the pair Y observed by Bob will have an opposite value and is no longer itself in a proper superposition. The normal explanation why no information is "communicated" in this process is that distinct information is only present when the system is taken as a whole.
But say Alice weakly measures X, and learns that its wave function has not collapsed yet. Weak measurement is theorized to enable restoration of the superposition state of the qubit. Can she then logically infer that Bob has not collapsed? Wouldn't this imply FTL communication, since Alice can "poll" her member of the pair waiting for Bob to force Y to de-cohere? In this case, communication occurs because Alice knows Bob has forced measurement (the fact that the measurement has occured itself can an arrange signal between Alice and Bob.)
I'm not trying to argue anything or break physics, just trying to make sure I properly understand what does and doesn't happen when entangled particles resolve to classical states. Other answers such as this seem to provide an answer only for strong measurement. And this answer, while helpful, doesn't address the problem of measurement that doesn't collapse the superposition.