Nah, not above ground. I mean in the underground cavern with the laugh at spoiler.. BLUE GRYPHON (subtle hint by where the BLUE GRYPHON is)
. This isn't the pushing you down from the sky thing, this is a subtle "push you to a horizontal direction" thing. If you're going down, it pushes you up, and vice versa. Try it..
I've printscreened an example. Turns out it happens anywhere, even above ground, it's just harder to verify above ground because of the pushing down effect getting in the way.
Here I let go of the keys before the star hit the wall, note how after hitting the wall it curved to a horizontal direction.(http://i150.photobucket.com/albums/s119/Roshajosh/hiddenthing.png)
Here I let go of the keys just before hitting the wall and bouncing into the vertical passage. The star keeps bouncing side to side, but slows going upwards until it stays level.(http://i150.photobucket.com/albums/s119/Roshajosh/Hiddenthing2.png)
Gosh that was a dull description..