The reason you have to shut the wire down is that the conversation is privileged -- are you trying to imply that it's to protect the lawyer as he breaks the law? Because I think reasonable people understand that it's to protect the client's right to share information freely with his lawyer.
Someone may share something incriminating with his lawyer, and his lawyer is bound not to disclose it, but that's a far cry from the lawyer actually making up a story for the guy and coaching him to tell it. There is a big difference between saying "don't admit to that" and saying, "here's a lie I made up for you to tell," which is what was suggested.
I think Jonathan is clearly lying, but I'm with Trimmer on the polygraph. The polygraph is pseudo-science. A century from now, people will laugh at it as they now laugh at phrenology.