Its interesting to hear everyone's thoughts about the ball-links. The link that came apart in my crash was the servo end of the tail rod, with a ball on the servo arm. The tail mount is, I believe, the NHP kit.
I wish I could have found that end of the rod, but it is lost out on the field somewhere. I would like to see if the plastic part of the link is actually broken.
I've repaired most of the damage now. I haven't flown this weekend because since putting the tail back together there is a noise from the boom, like the tail drive belt is rubbing the side of the boom. I took the tail off again to make sure the belt wasn't twisted but it seemed fine so I fitted it again, but I still get the noise!