My nikka Taka went out the bravest of them all.
He had no training, no experience, and was more stubborn than he should've been... But what a true friend through and through. He could've dipped and probably made it out of there, but sacrificed himself, knowing he wouldn't succeed. All to prove to the Khan that he will always have faith in the Ghost.
I understand Shimura's perspective and to an extent, he's right -- cutting folks heads off and poison isn't the traditionally heroic way, and really pushes boundaries. But ultimately I side with Jin, because while the Khan was tempting old boy in a cell with "peace", Jin was out here hauling his ass all across the island finding reinforcements just to bust his ass out. If it wasn't for "acting dishonorably", how many villages do you think would've been painted with blood of villagers and peasants? A samurai's honor is great, until you have to think about all the lives at stake. A samurai is willing to die for his ideals, but a peasant is just trying to make an honest living and feed their families, they shouldn't have to suffer because people can't adapt when the shyt gets cracking.
That's why I'm glad Jin didn't give Yuna up. She rescued that man from death, helped him reunite with his friends, got Taka to create the grappling hook (which came handy in numerous occasions), and even encouraged him to walk down the past of the Ghost. You could argue that's a bad thing, but again, when hostages are at stake... Do you really wanna do a bunch of standoffs with brutes and generals around?
Everyone else holds Jin to a high position, which makes sense because of his position. But to Yuna, he's just Jin. I hope nothing happens to her man, cause she's been through too much. Those two gotta stick together, cause it's clear she's got his back and vice versa.