I'm happy that the gaslighting only worked partially, but still: Suhyeon ought to have reminded himself that it wasn't just for the palliative that he took up the task. He himself concluded that siding with Sangwoo was the only way to escape being a slave to Jisang for the rest of his life. If anything, being slapped by Jeonghoo was more persuasive than anything Sangwoo had said.
And Woonghoo, it doesn't help make your case that you're "different from the chairman" if you keep using the same tactics and making the same faces as your dear corpse of a father. Down to taking the same "we're your saviours, you ingrate" line. Never far from the tree…