With all of the JA stuff I feel this is appropriate.
"If I don't walk out of here with this book all of the deadman's switches go off".
I believe so. The book is a signal. I believe JA probably said something to the effect of "let me carry this book out, or SHTF" That was probably ran up the CoC and came back as 'let him carry the book'.
M12 is a larp. Two steps under eyethespy.