We do see Ray in the flashback scene. During the battle when all the Leaguers are attacking Light at once, Ray is attacking Light, along with the trick arrows, the big green boxing glove, etc.
He's also on Hawkman's shoulder when they take the vote. He's one of the ones who voted to alter Light's persona, along with Hawkman, Barry, and Zee. So, yes, he was there when they did the deed.
