cool, looks like gross spaghetti.
well one of two things could happen. a) You could indeed get a bunch of mini slugs crawling around until they likely starve as they eat themselves out of a food supply, or b) the eggs will hatch out into planktonic veligers and be filtered or eaten by other tankmates. either way I doubt they'd survive to adulthood.
that said, if it were me, I would just leave it there.