It doesn't really need "discovered," frankly. Allow me to direct your attention to ye olde "sunwalking" thread:
http://smashboards.com/showthread.php?t=161031&highlight=sunwalking
Every reason why this does not need a specific name is detailed quite well in this thread. "Sunwalking," as its "discoverer" wanted to call it, was simply a sliding Ftilt. Here's the thing. Brawl is very slide-y. Compared to Melee, it is much more slide-y. But that's simply the new game engine. It's not a quirk or something special, it simply
is. That's one of the ways Brawl is different from Melee.
You can a whooooole buncha moves while sliding, but as was explained thoroughly to "sunwalking" 's author, there's no reason to name
any of them. We don't need to designate sliding Ftilts, sliding Utilts, sliding neutral specials, sliding Dtilts, sliding Usmash, etc etc etc. We just know they're there, because Brawl allows you to slide much more easily. We don't need to give each of them a unique name, because.. none of them is any different,
at all, in terms of mechanics, from simply doing the move. All "Sunwalking" was was an Ftilt in a particular circumstance. This is just a neutral B in a particular circumstance.
No this isn't worthless. No this doesn't blow. I'm not attacking anyone. It's just unremarkable. It's simply a feature of the Brawl physics engine, one that every player should've been able to notice on their own easily.
Thanks for contributing, though, and happy Brawling.