I don't think JB is that smart.
Keep in mind
he hadn't seen this tape when he requested it, that is why he requested it.
Casey says at the beginning of the tape she is not suppose to be taking this visit. JB is in New York.
JB's only reference point to what was discussed in this visit is Casey's version. Then it is not released with the others.
JB makes the mistake of believing his liar of a client and makes an



out of himself saying release the tape, it was withheld because it discusses LE's misconduct.
Be careful what you ask for, the answer just might be Okay. Tape released.