GrogNerd
mean old man
The money is still for his family....there's just a lot of it. I don't think he had piles of money elsewhere, which was a HUGE mistake in my opinion. You'd think a clever guy like Walt would be smart enough to break up his money into geographically separate stashes and use different methods of concealment for each one, sort of like the way Gus had his dead drops set up when Mike & Jesse went out to do pickups. Walt of all people should know better than to put all his eggs in one basket.
I think the more serious mistake that Walt made was talking about killing people (and other crimes) over the phone, especially when he knows Hank is already gunning for him. I think more than the pile of money (which he could deny knowledge of, and probably get out of with some clever lawyering) him talking about all that stuff when he was driving over there will be the nail in his (legal) coffin if it sees the light of day.
IF Hank & Gomie make it out alive. Hank should have called Tribal Police before calling Marie. now, she's the only one who knows that Hank has Walt in custody, but has NO IDEA where they are