Quote Originally Posted by The Vorpal Tribble
"at the end of the third round or die as its neck and spine are snapped and twisted. "

No spine/neck, nothing to twist to death ;)
Saw that...but other similar abilities have the disclaimers. Might want to at least specify that it can only affect things with a spine/fixed anatomy, and probably make it a death effect. Otherwise, you get the fantastically wierd possibility of one Broken using Death Grip to kill another Broken, despite the fact that they're already like that...