You grabbed him, Raph! And you - [here he turns to the younger one] - I swore on my honor that I wouldn't attack you, and you repay me by attacking my brother when the fight's already over? Do either of you even care about what's going on, or are you just going to spend all day beating each other's faces in?!

[He hasn't been this angry in a while - not since even before he came here. Maybe there's just something about the magic of two Raphaels that can drive him up an especially high wall, or maybe he's been clamping down on his frustrations for too long now, or maybe who cares because he is done with this.]