Not buying it. He can go away from his father physically, but not mentally. His father is that giant ant in his mind. Author's just making him try a final push before the inevitable. The mother is too distant emotionally now to be able to help.
Well, if the schedule holds, tomorrow we'll know. At least I hope it's painless.
I give props to Hansol and Kwon, they forgave him till the end. The task was impossible, but they tried their best.