User blog comment:Nick D Wolfwood/the Aizen/@comment-Gin Switcheroo/@comment-1454424-20100205092520

... no. Seriously, no. This theory only works if you conveniently forgets that Ichimaru was narrating last chapter. In addition, it discounts Aizen's internal monologue.

Think about it this way, while Aizen's hypnosis can control all five senses of the individual, the presentation of it has to be seamless. If after revelation you say to yourself but "such and such contradicts it" then the hypnosis, or at least the presentation of it was flawed.

Chapter 390 established Gin on a roof narrating. So therefore, the person fighting was Aizen. Then, during this chapter, just before he was stabbed he had an internal monologue that was identifiably Aizen's. Gin is not the type to have that monologue. So the person who Hitsugaya was charging towards was Aizen. About the only thing that can be said is the person Hitsugaya stabbed wasn't Aizen. Aizen can control all five senses so in the last minute, Aizen could have potentially disoriented Hitsugaya enough to make him strike someone else. That expression on Aizen's face on the last panel is a little too shocked. It could be Soifon or it could be Kyoraku, might even be Ichigo. But it's not Gin.

Rather, I should say, the flaw in your argument is that Gin has been fighting from the start/the captains were attacking someone other then Aizen. I do not believe that was so. At most, Aizen activated absolute hypnosis as Hitsugaya was charging him to make Hitsugaya attack someone else. My money is on Soifon or Kyoraku as they were in the general vicinity of Aizen. (Actually, now that I think about it, that expression on Aizen's face is a bit Soifon like)