Foster tweeted overnight, "It's been fun, twitter! Time for me to leave the digital realm. Be the light you want to see on the earth. Peace."
In previous posts the Pro Bowler said he was shutting down his Twitter account and he made the decision at 3am. Foster's previous tweets suggest it may have something to do with the NFL. A few hours beforehand, he wrote "When does the league start caring what we as players say publicly?"
We've reached out to Foster for an explanation, but have not yet heard back from him.