One of the board members who was closely aligned with Ilya in this whole thing was Helen Toner, who's a NatSec person. Frankly, this action by the board could be the US government making its preference about something felt with a white glove, rather than causing global panic and an arms race by pulling a 1939 Germany and shutting down all public research + nationalising the companies and scientists involved. If they can achieve the control without the giant commotion, they would obviously try to do that.