We've changed the rules for every single part of life and society because of this massive emergency, with no idea what the long-term consequences of doing so might be. I'm not sure why the FDA should be excluded.
I don’t think jerking our knees over an ethics safeguard that led to a pause in administration of a vaccine that soon won’t be widely available anyway is a great habit to get into.
Imposing political pressure on experts and forcing them to approve against their judgment would be a horrible corruption of these regulator institutions.
Maybe the expert regulator think that the bar should be lowered. But then they should come forward. This should not be ordered by politicians or their handlers.