I agree with your last point, and would be surprised if there are not 1 or 2 CA lawsuits posted in the a.m., due to his claiming that he "applied for EUA about an hour ago."
Back to the DSMB, I thought that Nader said that when the FDA reviewed the safety data at 149, that they did NOT look at efficacy. I assume that interim results in a month or so WILL reveal efficacy, if present, and will be considered if substantial.