Sci's take on Evil Abed is actually quite interesting...is Abed just imagining this?
Almost certainly. I mean, he suddenly starts seeing the same Evil Abed he imagined might exist while he's in the Dreamatorium? And Evil Abed just happens to have access to incredibly advanced technology from out of nowhere? And this after he hallucinated everyone as claymation? And Evil Abed just happens to be encouraging Abed's irrational resentment that someone else might dare try to make him not behave irresponsibly?
Let's face it, Abed doesn't quite live in the "real" world the rest of these characters live in.