Can you hear very well if you have ear plugs in? Of course not, the purpose of ear plugs is to interfere with the sound to protect your ear drums. What happens when you remove the ear plugs? Your hearing is restored.
This is like having a subluxation, the subluxation interferes with your brain's ability to communicate with the rest of your body. When you remove the subluxation, it restores the communication between your brain and body, therefore you can perform like it was designed to.
It is as simple as that.