Ken.. tell this church member OM was there... make sure church member knows this guy is a creep and that he's pursuing your wife.. ask the guy to inform your wife OM is no longer allowed on the premises or she will be fired...
And you can angle it that he was distracting her from her work... And he's been there before... Tell the church member he's NOT helping her get her work done that's for sure... HOPEFULLY this church member has the balls to support you and he will tell your wife OM is banned from the lab
BOOM! Exposure in the workplace..
make sure the Church member knows OM's been there before.. tell him you are getting sick and tired of visiting yoru wife and finding that guy sneaking around and hiding in the bathroom