It may not look the prettiest, but here's a quick fix.
Turn off the filter, take out the media and put it in a media bag or pantyhose as suggested and either drop it in the tank or hang it from the side.
In the meantime you can gather your resources together and figure out a way to handle the problem you must now face.
You could get a second filter to run until the eggs hatch and then keep it as a spare, or you could buy a sponge filter and an air pump and let it run. Or, if you have fairly clean eating fish, just drop an airstone into the tank with a pump, but, if you are going to have to buy a pump, Id go ahead and get a sponge filter while you're there. They only cost about $5. $10 total for a pump and sponge filter. Either way you go, just make sure to keep the old filter OFF and keep the old media IN the water.