User blog comment:Godisme/THE SQUAD ZERO/@comment-5398287-20121114232743

The whole Bankai thing reminds me of Cirucci's explanation of an Arrancar's Resurreccion: once they remove a part of their released form, they can't get it back, like burning off an arm.

As for the blade's state, it's likely that Kubo did this so that Ichigo will have to learn about his Quincy powers, to whatever extent he can as a Quincygami hybrid.

Also, when Kon came on screen I immediately thought it was an insanely muscular Grimmjow. I have a one-track mind.