Here's the lock and unlock utilities.
These files were all pulled from /usr/sbin I entered recovery with the blank update I talked about from before and adb pull'd the files after finding them in shell.
Unfortunately I don't know how to enter recovery from android in these builds. They are a lot different from any Android system I have worked with before.
Considering how different the recovery ramdisk is these files might not even be compatible with Bionic. It looks like the recovery is using the standard libc 2.7 and not bionic.