Bruce Ratner's Brooklyn juggernaut kept churning through the weekend, as two residential buildings in the way of his Atlantic Yards dream moved closer to a date with the wrecking ball. The Empire State Development Corporation, the state agency that's been pushing this megaproject all along, unanimously voted to condemn any and all structures that stand in its way. Ratner's Forest City already owns the buildings in question, having thoughtfully bought them two years ago; what it doesn't own, and has little authority over, are some of the tenants' stabilized rents. Thirteen of the affected residents immediately banded together and sued. The charge: You can't condemn a building without officially erasing the tenants' leases first. The question is now, and surely not for the last time, in State Supreme Court. Which should hold up that wrecking ball for at least a little bit.