I think the physics behavior works in such a way that you can't really have a perfectly strong connection between 2 or more objects. Even a pin joint (something unimplemented in C2) is slightly elastic.
It just comes down to the way the engine works, I think.
Its very sad if its true. Becasue my ships like this:
<img src="http://screenshot.su/img/69/95/05/6995051c558b1f64d7edcc9357bc4ea1.jpg" border="0" />
after been shot can becone thin:
<img src="http://screenshot.su/img/e8/2b/48/e82b48d6cc1e5c2878fd2656348d5ce4.jpg" border="0" />
and when its thin and i try to rotate, physics gone mad and starts to throw ship from place to place:
<img src="http://screenshot.su/img/bc/60/03/bc60036570d897d91fb8a4e93b8fea72.jpg" border="0" />
<img src="http://screenshot.su/img/d0/9f/8f/d09f8fd29ce1148d52b82cd5e9f783e6.jpg" border="0" />