User blog comment:San&Ashitaka/Chapter 51- Expectations/@comment-12277465-20131031205124

I think we'll finally get some answers. Remember, not much time has actually passed since Trost. They were heading for the basement, but had to deal with Annie, and then Beastie showed up and started causing trouble, and then the other Shifters revealed themselves. Basically stuff has been happening nonstop since Stohess. Now that they're back within the Walls, and Historia is safe, the Wallists and the military can pool their knowledge while they prepare to take back Maria. Which should be a lot easier now that Eren can apparently mind-control Titans for some reason.

Speaking of which I think this is starting to explain all the memory shenanigans (why would I remember that now?) and Mikasa's wierder abilities. Although we still don't know the full extent of it, of course.