Quote Originally Posted by Kraco
They are only there when the limiters are on. They were released before this fight.
Not true, check out episode 60 when he releases Ban Kai against Aizen. It's around 16:50 (lunar sub). I imagine it was probably an animation screw up.

edit: i went and checked the last episode and they weren't there in that one either. Seems a little odd that they would screw up two in a row, i guess it's possible he could have trained to the point of eliminating that timer.