Why would neutron degenerate matter come apart if released from pressure?

Quistion neutron star's spin verry fast.
How come that neutron stars are still spheres and not bulged ellipse shaped?

Can a neutron stars spin itself to pieces?

 

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I've read that there are neutron stars that are bulged (that a word?) out at their equators.

I suppose its possible, but I have no idea how the extreme additional angular momentum could be added short of a merger of two neutron stars, I've read that the escape velocity of a neutron star can be as high as .5C

Under initial forming conditions the angular momentum is self-limiting; that is to say that if AM is too high, it flings off the matter required to continue to form a neutron star and the forming process stops at that limit (which I dont remember) and the matter of the original supergiant star is dispersed.

 

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