Geist can fix Sisk. Geist can fix anything.
Granted Sisk will be a zombified version of himself who will be a Sithspawn with no reasoning ability and no memories of his past life and will simply be a feral beast under Geist's control.
But who needs humanity? Humanity is overrated.
EDIT:
On a serious note, I'll postpone Geist arriving to harass the Three Jediteers so they can figure out what they want to do.
I think Lumoti edited.
Are we alright to continue?
I think Lumoti edited.
Are we alright to continue?
It's like touching a live wire at this point.