User blog comment:Rejuvenation/Komamura's Bankai/@comment-1655581-20091213150752

No, it was just that Komamura doesnt die just gets 1/3 of the damage of what his bankai gets. So if bankai goes away that means Komamura was close to death or didnt have anough sprirt senergy to hold it, in othe words he doesnt get the full damage of his bankai getss