Again, I watched this demo a ton of times. I didn't see anything that you could call walls.
Seemed more like he knew the map pretty well and would guess where the T's would go.
As for the bhop, he's not scripting. I'm not trying to sound like im pro at bhopping, but I do like to bhop a lot.
Yeah he gets some really good bhops in, but most of them are only a couple hops. There was only one time where he hopped a GOOD amount, but even then, he lost speed as soon as he hit the hill. With scripts, you go up the hill almost just as fast regardless.