A simple Fabric mod for Minecraft 25w14craftmine that allows you to revoke Player Unlocks.
Hold shift and left-click on an Player Unlock widget, and it will be revoked.
Download from Modrinth or the releases page, and put the jar file into mods.
Installing this mod on server is required, too.
Configuration file can be discovered at config/player-relocks.json, currently a restart is required to apply changes.
Here are explanations of each configuration item.
Intentionally, no experience points will be given back as a penalty mechanism.
For instance, you can set this item to 1.0 to give back all of your experience points on re-locking.