PROMOTIONAL MATERIALS:
It is required that the Event Services Office approve, for technical and factual accuracy, all promotional materials mentioning the California Science Center produced for your event (including invitations, programs, press releases, etc.) prior to printing or broadcast. Please allow sufficient time for this approval.
So it is irrelevant as to who did the press release, it is still a violation of the rental contract. I guess you could say that passage was to be taken literally, and not as an allegory
That is unless you think The Freedom alliance can put a gag order on a news agency and The Discovery Institute too.
Since it appears the press release was apparently accurate it would be what the law calls, “de minimis”, a trifle.