Thunderbolts have made their response to the claim that evidence has been found of an expanding universe – B mode polarisation (thought to be evidence of gravitational waves) – see www.thunderbolts.info/wp/2014/03/25/guths-goof/
At the Thunderbolts forum there is a general discussion and it is suggested that what has been seen is a slight shimmering of polarised light from a plasma discharge. Another poster said they might have been looking at light from magnetic fields.