I think he is past the part of finding someone to blame. He is obviously blaming Uzumi and Orb. But he might blame the AA together with both Kira and Asuran if someone tells him that they were fighting on Orbs side in that battle.

In some way Shinn feels a little more grown up now than he did in the first few eps. I think he isn't thinking about his revenge as much as he did before.