I think that's the most extreme back-angle I've seen on a Spector bridge, though - most of them I've seen are more subtle. I don't think it matters as long as there is some kind of break angle and it's comfortable to play.
Agreed. That's much more break angle than needed. Really just needs to be set back a small amount. Also, if they were at a more reasonable angle, the string contact point would naturally move toward the nut a bit and maybe the saddle that's close to the edge of the bridge plate could be pulled back a bit to get proper intonation.
String gauge plays into this also.


