Quote Originally Posted by DB_Hunter
Very good observation, I missed that. It certainly is the Sharingan, as in the following panels his eyes are all black again. In this one each eye has a single tomoe in it.
Following question is - why did he have to "awake" sharingan again when protecting naruto?

Was the trauma so big that after awakening sharingan it has gotten sealed along with traumatizing memories?

Or his emotions were really cut-off and he needed another emotional event to get them back?

Tis' a mystary 4 me.