I enabled hide mini-map, and now i cant get my minimap back!
Disabling that setting, thus enabling the minimap. should give it back rightt?
Even when I uninstall this mod, my Minimap is still gone.

Found a way, first enable the feature to disable the minimap at night. Then wait till it gets day, and your minimap is back. Now you can disable the option or remove the mod and keep your minimap :-)

And to be totally fair, I don't fully understand the statement about this setting on the information page. is it purely for improved performance?

That's a clear-cut oversight on my part! I'll change it so that enabling the option instantly gives it back. Thanks for the report!

The feature was requested as an alternative to removing biters from the map, allowing for easy targeting during the day without impacting the atmosphere and suspense of not knowing when or where the next attack could be coming from at night! This was with mods that make nights pitch black in mind.