When I was practicing bkz_wallblock shortcut.

Tonight I practiced bkz_wallblock's shortcut and suddently, after many slide bugs, I got weird bug to upslide. The reason I made this thread is if someone could explain me if it was just normal planebug (or what ever it's called, the bug someone found from another downhill of wallblock) or jb or what ever.

Demo: Sendspace

Thanks for your time.