And Spock had just been told by his older self about Khan and what happened in WoK. IIRC, he paged all the medical staff afterward, anticipating having to sacrifice himself. Then after the near-crash he runs belowdecks and finds Kirk has done what he "should" have.I'm not sure why Spock blamed Khan. It was Admiral Marcus' who crippled the Enterprise, it was his plan that got them into that situation. Or have I forgotten something?
But Khan was still alive and Marcus was not.
And it was Marcus' fault but if Khan had stuck to the agreement Kirk need not have sacrificed himself
I'm gonna see it again in a couple of days. I hope that scene and the motivations play better for me.