Maybe it is already possible. I’m not savvy enough with Tinderbox (at all!) to know, but I don’t think so.
My thinking was this:
Tinderbox is great for collecting info, articles etc, and doing analysis on all that info. What if it would be possible to do a search on all the notes (or on a selection based on tags or whatever) and automatically have Tinderbox in the text select the sentence (Between . and .) in which the searchterm is found. That would make it possible to collect the info your looking for on a more efficiënt and microscopic scale, specially if you have a bunch of long notes and/or articles. You could even make it a sort of choice, where the user could choose te retract the paragraph the term is found in or the sentence. And this without going through exploding the notes.
As I said, maybe it is already possible. Or it is just a wild idea that is impossible. I don’t know.