Galaxies moving faster then the speed of light in 1995 (NASA's unexplained files)

I'm watching the documentary 'Nasa's unexplained files' (= no woo, it's from NASA). It seems to be that in 1995 Professor Bob Williams using the Hubble telescope noted galaxies moving faster than the speed of light. But according to physics nothing is supposed to be able to move faster than the speed of light. Some scientists have concluded that due to space warping and twisting, it gives the illusion of galaxies moving faster than they really are, while some have even suggested that they may not be galaxies at all, but may be warp engines on crafts that are being mistaken as galaxies. Professor Bob has rejected both of these theories and has thrown down the gauntlet challenging other scientists to bring their evidence to disprove his claims. If true may we be missing something?

(2500 stars were moving faster than the speed of light).