This entire story smells fake. If TrueCrypt just saved your life, would you really go tell reddit? The dialogue feels constructed; there's no insight about the experience. It's more likely that it's a fabrication by a district attorney, to be cited in the future (just as you have here).

Edit: further evidence for this being a fake:

* This supposedly happened in Februrary 2004, back when TrueCrypt was version 1.0a and barely known.

* His story suggests that his laptop's system drive was encrypted. TrueCrypt added system disk encryption in version 5.0 in 2008.

* He slips up and says he used AES encryption; this is noticed in the comments and he edits it out (I assume).