So you actually could leave, but are choosing to stay for reasons that outweigh being free of NJ...
You seem to have a rather simplistic view of things. Technically speaking, of course, anyone can leave unless they are in prison, or destitute. That does not mean that there are not other reasons or factors that make leaving more problematic than staying for some period of time. That is the point I was trying to make. Life isn't always so simple, or so black and white as you seem to think it is.