Those aren't heely's. Look at the shoes as he goes by. Nothing on them.
You really can't notice the wheels on them lol.
When he slid by the heels looked a bit big though and I'm guessing that's because I see a bit of the wheel when he lifts his feet, but I can't really say I'm certain cause the video's such poor quality.
Also notice at the end how he does a little slide and turns when he's trying to stop. That doesn't happen without wheels lol.