there is this technique that as far as I am aware was discovered by me (I named it k-cheesing because originally I figured it could be used to cheese pipe stages) and it works something like this:

1. get on a pipe
2. spam unflip (hotkey k)

with this technique it's possible to save oneself from a very bad pipe landing because it becomes extremely difficult to fall off the pipe, it is also useful for stages like 80 and 81 because you can go down the pipe on stage 80 fullspeed and with correct turns run down the pipe on 81 without slowing down either. this technique does not affect times too much and does not break the game in a significant way, to add to that it is still clearly outmatched by flying, yet it very neatly compliments No Major Glitches runs.

I did not think to mention this at the time of uploading, but my 100 stages No Major Glitches run also uses this technique.