Genesis 43:23 - Was Simeon in on the secret?

And he said, Peace be to you, fear not: your God, and the God of your father, hath given you treasure in your sacks: I had your money. And he brought Simeon out unto them.

And he brought Simeon out unto them: Did Joseph let Simeon in on the secret while his brothers were at home worrying about the espionage case? I don't think so, Simeon was the second oldest and did nothing to prevent Joseph from being sold into slavery.