Jaime hade en inkling som Cersei inte skulle döda honom
Vår bra kompis Nikolaj Coster-Waldau (skådespelaren som skildrar Jaime) bryter ner det här för oss snyggt i en ny intervju med Leigh Blickley på HuffingtonPost :
[Leigh] Not going to lie, I thought this might have been your demise. The Mountain was ready to kill you! But you called her bluff.
[Nikolaj] Cersei had the chance with both her brothers to kill them and she was threatening to do so, but both times she eased off on the trigger. I get that with Tyrion she was setting him up for failure ― making him believe that he was the hero of the day, that he negotiated this amazing support from the Lannister army and what a wonderful thing he did. So that makes sense. For Jaime, I would think he would think there was part of her that still understands that he really is the last person that she has. That is the truth; that must resonate somewhere inside her. That would help. Or maybe the Mountain is just so thick that he didn’t get the eye signal. Maybe there’s a scene right after where she goes, “Why the fuck didn’t you kill him?! I gave you the signal!” I don’t know. Who knows. We’ll never know because that scene isn’t there, but that might be the case.
-HuffingtonPost, Nikolaj Coster-Waldau Breaks Down That Huge Jaime Moment On 'Game Of Thrones'.
Kollaten är att det här är skådespelarens egen tolkning av scenen, men det visar att författarna inte har berättat Nikolaj själva anledningen för detta. Det är inte att säga att man inte existerar, men det här är all insikt vi har just nu.