That's not what I meant. For every new "data layer", Google adds to Maps, its initial data comes from spidered local web sites, not from owners. I am starting to see information collected by me show up in excerpts for certain local searches on Maps (yes, dutifully linked to my page, but that doesn't change anything). I want to know if I have the option of not providing the data that I collected to Google. Robots.txt will not work because it will kill the search engine spider, too.
I am wondering if Google provides a finer-grained option, as it now does for newspaper owners (i.e. you can keep your articles in the main index, but not participate in Google News). Anybody know?
I also have stuff indexed by Google Maps, although I am pleased it's showing up in Place Pages.
No, I do not believe there's any way to be indexed in one without the other, aside from trying to detect Googlebot and suppress addresses and geocoordinates from being displayed to Googlebot (which would be a form of cloaking, risking penalization).
I don't quite understand why you have no trouble with excerpts/snippets showing up in regular SERPs, but do not want them to show up in local search where they may actually be even more relevant. Both provide multiple opportunities for your content to be found and clicked upon...