Actually I was referring to the Shivans simply jumping light-weeks away from Capella and then back again.
You mean jump inot GD, wait a few week and then jump back in?
Since IIRC, jumping outside of the boundries of a star system is impossible outside of a node. And the edges of a star systems are hardly light-weeks away, more like light-hours or light-days tops, meaning the shivies would still get fried.
Oh and BTW non-spherical supernovae isn't as unbelievable as you may think. But of course you'd know that since you'd have checked NASA's website first, right?
I know it's possible for explosions to direct the major part of their destructive power in one direction.. However, it's never all of it. and even a fraction of a supernovas destructive power would be enough to fry any ship.