Did it go out or is it just dirty? Take it apart and clean the impeller and the pump very well. My Eclipse 5 Hex got hung up after the last PWC
. A little tap got it going, but I'm betting my impeller is dirty.
If the motor is indeed dead, your fish may be ok for a few days in the tank. When I dropped and shattered my AC70, my fish stayed in the tank without a filter for about four days without issue. I guess my bacteria populations are good because the water parameters were still good when I got the new filter. I kept the biomedia in the tank, which probably helped.
Are they actual cracks or just a little crazing? If it's cracks, now's the perfect time to upgrade to a bigger tank.