No, they didn't. An alternate (and simpler) explanation being that the experimenter and the particle are entangled.
I forget where I read it, fairly recently somewhere... but something along the lines of measurement == entanglement.
Or, the movie version:
https://www.youtube.com/watch?v=dEaecUuEqfc
No, they didn't. An alternate (and simpler) explanation being that the experimenter and the particle are entangled.