That was My buddy Matt, aka Victor Krum. He says he has it from a reliable source, probably his GF. But Me and him think that it could go like this:
Harry, saw the Green flash come at him, and before he knew it...he woke up. He looked around. He was in the Cupboard under the stairs, exactly like it was before his first year at Hogwarts. He felt around his forehead, and there was no Scar.
Then, we could add something like, the X files people coming up and going, there was no schol, there was no wand, there was no Dumbledore, it was a dream, there was no scar.