Then what I would do is create a new encrypted volume, copy the files you want to keep into it, and destroy the first encrypted volume by writing over the first few megabytes, destroying the decryption key. And from now on, use separate encrypted volumes for different things. That's not a perfect solution, because the hard drive may have been defragmented, leaving other copies of the encrypted file in other locations, but I doubt LE is going to forensically analyze the free space of a small time drug user/dealer. That takes a lot of time and costs money. Bradley Manning, yes. A low level drug buyer, no.