he was ready to turn himself in. then those two pricks had to go on CNN, trashing him... it's all about credit for him, and them taking that away... he's gonna ruin their world.
He was ready to die, pretty much. Flynn rejected the money and told him to die. This shattered Walt's already wounded image of himself as a family man. So what's left?
His former partners reducing his contribution to the company name was the ultimate insult. It was a also a spark. In a previous episode Walt said that his ideas practically built the company. I don't think he's going to do anything to
them, I think it gave him the motivation to go home and sort things out. It filled him with egomaniacal rage- filled the gap that the family man identity left. Heisenberg awoke once again although now he is a different Heisenberg, weaker and dying.
The only thing left for Walt to do now is to figure out how to find the Nazis. And how to kill them. He may not even bother giving the money to his family, since they don't want it. Walter royally fucked up their world and what good is money if one is a pariah like they are?
The only thing for Walt to do now is to figure out how Heisenberg will come out on top.