It's pretty scary that this turned out exactly the way I said it would, that the worst thing is for Boeing to try to paper it over and then have one of those batteries fail in flight. Scarier that the FAA's head was happy to hold the glue bucket.
But at least BA will have laser focus on it, not just a high alert but all hands doing everything to get this cleaned up in the least possible time. It's a good kick in the #$%$ for an arrogant company. And as problems go, the solution to this one is likely to be a small change in the battery manufacturing process, though there's still a chance they'll have to change battery technologies entirely, and all of the alternatives are heavier and bulkier, which may require significant changes to the aircraft design, which is probably at its limit for fit in the cockpit right now.
I may even pick up some shares while it's bottoming, but not just yet.