It looks like Peter Todd maliciously published information about a bug/exploit that had just been fixed in BU.
Very possible.
Now that BU is gaining serious momentum, Core is pulling out all the stops and resorting to dirty tricks. They are terrified of losing control.
Looks like you BUcoiners are on some severe denial.
Facts:
1) This was released by BU developers, once it's in the wild it's BU developers problem if something goes south
2) Peter tweeted about this 1+ hour after release, so this is not a 0day
3) BU devs are being childs about their own fuckup:
https://www.reddit.com/r/Bitcoin/comments/5zhmwn/andrew_stones_bu_dev_fake_screenshot_is_a_poor/BU is dead, and it's all due BU's dev incompetence.