reintroducing a quarantined bird

Any suggestions about reintroducing a 6 month old rooster that has been quarantined for two weeks? He was the boss chicken and really took his job seriously, but was sidelined by a near-fatal infection that settled in one eye. All the flock has been treated and are now off antibiotics. None died. Boy, did I learn alot in those two weeks!! He has been up, eating and drinking very well, crowing, and now, pacing in the infirmary like he is ready to get back to work. In the meantime, his lieutenant, who is smaller and younger has decided that he sorta' likes being number one. Y'all would not believe the lengths I went to to save Roscoe's life (oh, wait, yes you would!) I sure wouldn't want anything to happen to him now. Will they need to reestablish pecking order all over again?