This is one of two things:
1. He's been warned, threatened enough to back down until he has more.
or..
2. Coming out with this story has prompted a few involved to bring their details to someone actually willing to pursue the story.
WNSP, where Lee was supposed to give an additional interview is claiming they haven't received any return calls or texts this morning. J. Lee posted the pinned note well before the interview, so claiming they don't know might show them as to being the ignorant party on that issue.
Today, or the next few days should be very interesting.