In general, the Defense Professor's actions read as compensation to me - if this is his doing, it certainly wasn't his plan. I have a very hard time coming up with reasons why one would want to be seen blasting through Hogwarts unnecessarily.
I'll agree that his rush to the combat is almost certainly an attempt to keep Harry alive. Unnecessarily, but he had no way of knowing that. But the troll attack seems to almost certainly be the doing of the person who used Hermione to attack Draco, and it's hard to believe that was anyone other than Quirrell.
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 chapter 88-89. 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.
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: