Actually with relativity and all I'm not exactly sure there is a just a single correct definition of the instantaneous state of the universe.
My understanding of the experiment is as follows:
Take two entangled photons, beam them up to satellites far away from each other. The satellites have detectors that measure the polarization angle from 0 to 360 degrees. Since entangled photons have opposite polarization you'd expect an inverted V (red line): https://en.wikipedia.org/wiki/Bell%27s_theorem#/media/File:B...
Instead, you get the blue line. Which is weird, because it is basically a cosine curve, and implies that the photons are able to determine the relative angle of the detectors. The crazy part is that this curve still holds even if those detectors are very far apart and you complete the experiment before any information about the relative angles of the detectors would have time to pass from one detector to the other at the speed of light. This is what implies that a pilot wave would have to move faster than the speed of light.
Yes. The pilot wave at any given point can be affected instantaneously by changes anywhere else in the universe.