Walt's "confession" tape
I've always wondered, when it comes to the "confession" tape Walt made in which he "accused" Hank of being Heisenberg, what Walt was going to do with the tape. Was he going to turn it to the DEA if Hank refused to back down or not?
I mean, part of me thinks the tape is just meant to scare Hank, and Walt was never going to turn the tape over.
See, in real life, Hank's best option would have been to immediately begin seeking a defense attorney to navigate any legal issues, given that his job at the DEA is at stake and this "confession" might lead them (in his eyes) to think he was a mole for Walt. In the "confession," Walt had mentioned how his drug money paid for Hank's therapy. If Hank's lawyers could successfully prove that he had no knowledge that his therapy had been paid for with drug money, he'd be in the clear on that matter. Same for everything else in the "confession", as all of it is just half-truths that Hank's legal team would probably be able to discredit with character witnesses - and Hank has countless colleagues and bosses who could vouch for his activities, dedication to the job, and his character. Not to mention his obsession with nailing the mysterious Heisenberg well before discovering it was Walt.
My opinion is that Hank had next to nothing to fear about Walt's "confession" if he refused to back down. At the same time, I don't blame Hank for his decisions afterwards, because fear is a powerful self-defeating weapon that can cause poor decision-making, something inherent in every character whose life got touched by Walt/meth. Walt's "confession" tape was designed to exploit that, when in reality, he was probably just bluffing. The only thing Walt was doing was trying to scare Hank into backing down. If it failed to deter Hank, well, we don't know what Walt would've done, as he'd earlier refused Saul's suggestion of putting a hit out on Hank.