It was a statement that was made in response to an email sent to Woodford. The gist of the statement was that they were not under any formal non-disclosure that would prevent them from trading in the company's stock. HOWEVER, they do occasionally come into possession of non-public information in their discussions with companies they invest in, which precludes them from being able to trade until that information is made public.
I remember this, because I had long maintained that they were under non-disclosure from their meeting with the company in September, 2015 regarding the reasons for the enrollment hold. That was the meeting they said there was "nothing untoward" regarding the hold.
I'm paraphrasing here, but I'm sure the person on this board who originally sent that email and received that response could help us out. I can't recall who that was at the moment.