Basically this is a fancy way of edgehogging or edgeguarding that uses taunt cancelling - see the video here: http://www.youtube.com/watch?v=O8_Gt4hUTuw
You could do the slightly faster lean drop, but this one is a little safer, plus it gives you a good excuse to taunt cancel.
You could do the slightly faster lean drop, but this one is a little safer, plus it gives you a good excuse to taunt cancel.