First off, get in the habbit of making backups. "Misplacing" files isn't a good idea, as I'm sure you're finding out.

The B::Deparse may be worth while investigating, I'd still say your time would be better spent implementing a working backup routine, rather relying on getting some form of your source code back via this method.

If PerlApp works in a reasonably similar manner than other Perl packagers I'm sure you'll be able to get at least an obfuscated version of your source code back from packaged versions. See decompile perlapp 4.1 or Super Search for similar posts.