[ChicletPrime]

no, that's exactly what happened - i just played it so memory is fresh. in the shot as it happened, it looks like the girlfriend may have the black dust on her, or maybe she's bleeding from a wound, but my first reaction was corruption. she's out cold, Zayne carries her to the slab, has a moment of steeling himself / what looks like sorrow; then he reaches out over top of her and pulls out an arc of frost/ice in a glowing ball.

there is no blackness in the energy ball - I was looking for it when it happened and again when I looked at the screenshots and its visually clean. he clenches his hand around it, pulls it to his chest/heart and (re)absorbs it. All through that, his hand and the ice ball are pure. then pulls his hand away and it darkness starts to spread almost instantly - he looks at his palm and there's ice and darkness all over it.

just before this all goes down, he does say something like "I can still make one last choice" or words to that effect.

so even though the ball was pure ice/energy, whatever he took from her made his corruption worse, which is why i went with the snap conclusion that if 1) she has crystals in her heart and 2) those crystals are likely corrupted from the initial experiment, 3) zayne has just chosen to remove it from her while she couldn't see and couldn't protest or ask questions.

EDIT: woo, bullet point notes! looked back about five posts and yes, that's exactly what he says: "But at least, I have one last choice." I could be talking through my hat (i'm likely talking through my hat) but that was my first and biggest impression - Zayne cleansed her. If it has just been some sort of normal wound, or just taking his own power back, why the "choice" line? admittedly, if he just took back whatever she took out, that would work too, but i like MY idea more because it implies Zayne is choosing to make things better for her at the expensive of pushing his fragile internal balance over some arbitrary line.