you're a walking disaster. a demon who wreaks havoc wherever he goes. (From Lois)
Every word feels like a stab to him, but it's deserved, it's justified. He moved Clark around like a pawn, knowing full well if he let him go home, he'd tell Lois about his insane plan, try and talk him out of it.
The chance of it working was less than 1%, but they never worked with odds that were in their favor. Clark knew what he was doing, he's not dumb. The farm boy isn't clueless, but he'll eat the whole blame. he doesn't care. The Earth got saved, even if his relationship with Lois gets torched to the ground.
"Yeah, I am. I'm whatever I need to be to save lives. That's what always mattered more to me, Lois, you know this." He's playing the bastard, it's not hard, a lot of it is true.