Yes, yes, we know: Lots of Manhattanites who’ve resettled in Brooklyn love it and will never leave. But for those of you who still pine for life across the river, the same forces that once pushed you unwillingly across the East River may now be pulling you back. Falling prices mean that Park Slopers and Carroll Gardeners suddenly have the option of swapping brownstones and yards for the one and only experience of life in New York County. Fire up the Bugaboo stroller and head for the bridge!