[hider=Spoilers]
I think Tyrion's done. Sansa's on her own, Shae's done, Bronn's done, and he's had his big climactic moment in the courtroom. He also had some dramatic last conversation with his brother about the things he never understood in life. There's nothing left for him to do. The only way he's getting out of this is if Sansa convinces Bailesh to do something, which I don't know why that'd happen. [/hider]