Urahara even said something along the lines of "At this point, both friend and foes...will take action against them. Vizards...Us...and...Soul Society." don't forget before he said this he was talking about the Vizards and finding out there goals.
Shinji doesn't think of shinigami as friends he said to Ichigo that he is one of them, and that his friends and SS are not his friends. Then when he arrived at the battle he said that "We're are not on your side. We're against Aizen. And we're on Ichigo's side."
The only people that we no have used that doll to get Bankai are Urahara & Ichigo.