Forum:KB:Darth Bane ultimate fate?

I just finished the excellent Darth Bane book trilogy, for those who haven't read them, they're awesome, but below contains *spoilers* so read at your own risk.

According to Wookiepedia, this is the summary of Darth Bane's death.

"The two Sith Lords matched wills, each trying to push the other out and into the great void from which there was no return. Bane's body was destroyed, turned to ash by the power of the ritual. After a struggle of wills, it was over. Zannah had triumphed, and though a small portion of her master remained in her, the Dark Lord Bane, creator of the Rule of Two, was dead."

The final words of that chapter was that Darth Zannah's new apprentice, Darth Cognus, noticed Zannah's hand was twitching. In many parts of the book, Bane's hand was uncontrollably twitching. I interpreted this to mean that Bane had lost the physical battle, but won the fight of minds, taking over Zannah's body.

I returned the book to my library, so I can't look it up, but was there anything else I could have missed that confirms Wookiepedia's summary?