McGonagall may have been insane to unlock the Time-Turner, but she was simply incapable of withstanding the emotional pressure Harry suddenly put her under. Doubtless it is not something she had originally intended to do, and she may well regret it horribly once she regains the capacity for rational thought.
If McGonagall wouldn't, Harry would go to Dumbledore. It's extremly unlikely that Harry wouldn't get his Time-Turner unlocked in the situation as Harry is willing to alienate the two but they aren't willing to alienate Harry.
This is a new thread to discuss Eliezer Yudkowsky’s Harry Potter and the Methods of Rationality and anything related to it. This thread is intended for discussing chapters 91 & 92 . The previous thread has passed 500 comments.
There is now a site dedicated to the story at hpmor.com, which is now the place to go to find the authors notes and all sorts of other goodies. AdeleneDawner has kept an archive of Author’s Notes. (This goes up to the notes for chapter 76, and is now not updating. The authors notes from chapter 77 onwards are on hpmor.com.)
The first 5 discussion threads are on the main page under the harry_potter tag. Threads 6 and on (including this one) are in the discussion section using its separate tag system. Also: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,18,19,20.
Spoiler Warning: this thread is full of spoilers. With few exceptions, spoilers for MOR and canon are fair game to post, without warning or rot13. More specifically: