i was playing the purple comet mission in the SEA SLIDE GALAXY and BAM! here i go flying in the sky!
i was underwater in the area where the tower with the flag on top is, also has a little gate fence underwater.
so first i was swimming by holding A and doing the spin thing. went through the gate fence, swam towards the dry land area where you can start walking then out of nowhere i flew into the sky passed the floating clouds.
glitch was almost like in dusty dune galaxy where you shoot in the sky after pressing the button.