i was just thinking about what gin said, about how holding kyoka suigetsu would nullify the effect of hypnotism. didn't yamamoto do the exact same thing when he fought aizen?
and yoruichi did something similar to byakuya, wrapping his zanpakuto with a cloth to stop it releasing.
and, obviously, kenpachi to tosen. it's happened a few times already, i can't see it not being legit. and gin
ALWAYS has his eyes closed(?), so he might not have seen kyoka suigetsu. unless this was all part of aizen's plan.
...
anyway, does this mean ichigo's training is all for jack now since the guy "who can only be defeated by the final getsuga" is now apparently dead/dying/screwed?