as the title, there is a legal way to hack validation
im not sure who did that script but i think it was for gravity/moon project, since you can force custom gravity only on servers you can not validate "space" maps..
well so that script validates your map with one click:
download here
unzip here
D:\Maniaplanet\ManiaplanetDocs\Scripts\MapTypes\TrackMania
(maniaplanetdocs=documents/maniaplanet for you)
go in editor, hammer, map types, hackerino, after that press ok, then maptypes again, choose Race, save map... done
you can not validate map by yourself now, so if you wanna drive it later, rename Race.txt to 2Race.txt
works for me fine, but no author time then, just for testing purposes, works also on servers afaik