I'm pretty sure Ultra is possible in this track, though I've only experienced in Grand Prix with springs, and either way only once (see Pizza Cup PB), peformed incorrectly and you lose time.

Glitch doesn't slow down the kart, but is incredibly difficult to perform correctly, from hitting the clip correctly, to narrowly dodging the invisible wall. Not yet sure if it even saves time, though it puts the player closer to the UFO.

(No, the video isn't spliced)

Congratulations1!1!11

2 One was when the update released and the other was a speedrun.