Why not? There are possibilites exists that galaxies expands and contracts in the same time but not necessory with all galaxies. Galaxies are expanding in one end but may be possible that it is contracting at another end at the same moment. This creates an equilibrium condition like if you expand a balloon from one end then it contracts from other shape as it has a fixed air volume. Same rule may apply in galaxies that's why we are getting mixed results that galaxies are expanding and contracting.
If a galaxy expands continuously then it may end with a blast and disappear in universe and if galaxy contracts consistently then it will become a super sized object consisting of planets, stars and will end.
