SLF --
I recently read the New Scientist article, but I'm afraid that's the
limit of my knowledge of this theory.
I'm not aware of any consequences of this theory that could be
tested in my field, but if they exist I'm sure they will be checked.
Up until now Special Relativity has proven to be a very accurate
and useful theory. On an aviation note, I think that GPS uses
corrections for both Special and General Relativity.
As to the photon's view of the universe. Being the only
massless particle (in our current understanding anyway) it is
of course travelling exactly at the speed of light. This means that
from its point of view, the universe is contracted into a plane,
perpendicular to its direction of travel. And of course, time
completely stops, so while to us the Universe is 4D, the photon
sees it as 2D.
These results are purely Special Relativity and would apply to any
theoretical object that you could make with no mass.
The "spooky action at a distance" stuff is just a result of Quantum
Physics.
A lot of these odd behaviours do not need zero mass, indeed its
possible to reproduce (for example) the interference effects that
you see with light, using electrons. You can perform the two slit
experiment with light and electrons and in both cases you will
see a diffraction pattern, you can even choose where/how to
measure the electron and see either wave or particle behaviour.
There are several examples in particle physics of the
superposition of two quantum states to produce a particle that
we can then observe. One consequence of this superposition and
a mass difference is that the type of particle we observe will
change depending on where we try to measure it. The most
recent example of this has been the measurement of Neutrino
Oscillations.
Entaglement of states can in principle (although so far I don't
think in practise) be measured at the experiments running in
America and Japan at the so-called "B factories". These
experiments collide an electron and positron (anti-electron)
at just the right energy to produce a B0 and its anti particle.
This B0 is a particle that contains the second heaviest known
quark, the b quark.
Anyway, these two particles are produced coherently in an
entagled state and then travel some distance apart before
decaying. The decay products are then measured in the detector.
The experiments are actually looking for something called CP
violation, but I won't go into that unless asked!