Quote Originally Posted by heero
No I think urahara turned them into vizards to save them from the hollow "infection" but the soul society cannot allow half hollow half shinigami captains running the system. So they decided to banish them from soul society along with Urahara who is the creator of this transformation.
The question is, who caused the hollow infection. Aizen? If so then soul society did not figure it out the whole time. Or maybe they blamed Urahara for the cause...
To me, it seems that he saved them from totall disaster. Now why ban the guy who did that? I don't really think that the other captains will just allow it to happen, atleast Yourichi. Maybe that's one reason for her leaving, she could'nt prove Uraha's the innocent one or maybe just thought that they run the system wrong and left along with Uraha.

WELL...MAYBE!