Safecoin composting/recycling

I never put decaying/composting the data on the discussion table, just safecoin ownership. However, this raises a question I’ve had.

How does the safe network delete data?
Let’s say I have a bunch of documents that I don’t want backed up online any more and decided they can go in the trash. How do those chunks get removed from the network, freeing up space for use by others?

Second question: If it cost me some safecoin to store data on the network, do I get some safecoin returned back to me when I delete the data?

EDIT: Nevermind, I found this thread …