Wow, I thought that was actually pretty great.
So are they actually going to be changing the show's whole mythology, or is this just another fake out? The presence of you know who at the end makes me think it's the later, or perhaps some kind of a combination.
It was always implied that Scully and the rest of the women were abducted by humans with screen memories made to look like Greys. Then there were the weird hybrid super soldiers and clones. Aside from the occasional alien/mutant, the only major extraterrestrial thing they did was the black oil.