  We consider the process of catastrophic expansion of a spacelike wormhole
after a violation of its equilibrium state. The dynamics of deformation of the
comoving reference frame is investigated. We show that the deformation has a
very specific anisotropic feature. The statement made earlier by other authors,
that in the process of expanding the wormhole connecting two universes these
universes ultimately unite into one universe, is not correct. We show that the
transverse size of the wormhole (its throat) increases and the length of the
corridor decreases which does not correspond to the de Sitter model.
