and thanks for the response. I know the split polygon tool, but the one in the video was different.
It was the split vertices tool, and it done this: say you pick any given vertice, and choose to split it. It is replaced with a new number of vertices, one for each edge that joined the original vertice. So, if you done ran it on a vertice say on the corner of a cube, you would then have 3 vertices, one for each edge; the edges from it would also be separated from one another, so you could then peel away each vertice of the corner individually, like you were unwrapping a present.
Also, they showed a tool called collapse polygons, which also seems to be gone.
If anyone knows anymore about these any information would be great.
EDIT: The link you gave links to a site called tech space; has the original moved?