User blog comment:Salubri/Final Fight: Reflections of an Unrealistic and Ridiculous Battle/@comment-44061-20100211215444

Actually we know that Yoruichi, Yamamoto, Urahara and Tessai where affected for two reasons. One because before the night of the Vizard incident the one following Shinji around for the past couple of months wasn't Aizen. It stands to reason he had interactions with alot of people in that time, especially the captains of the time, thus he could move around without fail, no one ever knew. Also if no one else had seen it then Ichigo wouldn't have been the one they staked their plan on. Also you yourself acknowledge he has been manipulating these people for hundreds of years. He may not have gotten to Isshin but who knows.

As for Ichigo's actions I cant justify any reason for that. She was obviously a Shinigami even if he didn't know her personally. Im sure he doesn't know alot of the rank and file personally that doesn't seem to go with his butt in personality either. I cant explain his actions besides he stood there.