Turn Back the Pendulum 9

This chapter has finally revealed some stuff but, it actually left me with more doubts.
Kyorako seems to be checking on Aizen. Is he suspecting him already? Either way, Aizen’s hypnosis is working well.
Elsewhere, they continue fighting Kensei. Lisa and Rose are getting really beaten up and Hachi finally does one really powerful spell, level 99 and no incantation. Kensei seems to be grounded for sure this time. Mashiro has probably already been delt with, since she’s weaker.
But, things are far from over. Just as they intend to remove Kensei’s mask, Hiyori transforms and attacks Shinji surprising everyone. I’m not sure if she went into Vaizard mode, where she controls her powers, or if an hollow took control. It’s probably an hollow since it takes mch time to defeat your inner hollow and take control. But, she said "Take your stinking hands off of me" instead of something like "Let me go, I’m feeling weird". So, I think she kind of wanted to attack Shinji herself.
At the same time, while everybody is still getting battle ready, everything starts becoming black, Tousen’s shikai is doing this. Tousen immediately strikes Love.
Everything has been carefully though of. The powerful captains are all falling. I hope they still have some strength left, because I think only Lisa is standing now and she’s not in a good shape.

And then, Aizen appears. The one at Soul Society is probably an illusion. I’m glad Urahara and Tessai are heading there. We’ll probably find more in the next issue.
About the transformations. Maybe Aizen has already put something in the air, or something like that, that is slowly affecting the shinigami. And maybe they are all already in the process of awakening an hollow.
This chapter confused me more, because I can’t understand what happened in the present now. I can only figure out that the shinigami will be able to escape and that Urahara and Tessai will help them get back to their own selfs. But, now that they know about Aizen, it probably means they won’t go back to Soul Society anymore. Or they would expose Aizen straight away and nothing would make sense in the future.
Aizen will probably use his illusions to put put Soul Society against them. This probably means that Aizen’s plan will stop for now. I guess he only wanted to take some captains out of the way and test his "hollowizing" abilities. But, doesn’t make that much sense. Maybe Tousen will be Captain now but, Gin still has a long way to go.
But, I still find it hard to believe that they won’t be able to warn Soul Society. So much could have been stopped..
And why didn’t Urahara ever act like he already new of this? And why didn’t he and the Vaizards sperated from each other in the real world? Was he already predicting everything that Ichigo would have to go through when he "hollowized" him?