What makes you say he was on a steep slope? Nothing about the background suggests that this is so (for example, all of the cars in the car park below). Also, if

What makes you say he was on a steep slope? Nothing about the background suggests that this is so (for example, all of the cars in the car park below). Also, if he was on a hill, the bike would have to have somehow had enough angular momentum to spin back up hill, as it appears to do in the later part of the clip.