Hughes was placed on short-term Injured Reserve last week when the Eagles signed CB Roc Carmichael off of the Houston Texans' practice squad. Short-term IR shouldn't be confused with "Injured Reserve - Designated for Return".
He was also released by the Eagles earlier this season in order to avoid guaranteeing his vested veteran salary. The team brought him back after the week 1 games were over.
Hughes was originally acquired off of the Giants practice squad in late 2010. Since then, he has been active in 31 games and started 1 (2011). Hughes contributed as a depth CB and on special teams.