The Spartans took the hint and never attacked the Macedonians. Sparta by then was much diminished. Thebes pretty much beat them and Phillip learned the art of war when he lived in Thebes as a royal hostage.
You've got your history reversed. The Macedonians made every other Greek city-state submit to them but they left Sparta alone.
This is why when Alexander defeated the Persian Empire he sent 300 suits of Persian armor to Athens with the following inscription: Alexander, son of Philip, and all the Greeks except the Spartans, give these offerings taken from the foreigners who live in Asia.