Puzzled by the FDA's Pause of Johnson & Johnson COVID-19 Vaccinations

I was watching the Food and Drug Administration give their recommendation Tuesday morning in favor of pausing the administration of the Johnson & Johnson vaccine against COVID-19, based on the documented occurrence of six cases, one fatal and one in critical condition, of women age 18-48 suffering blood clotting out of over 7 million vaccinations of the product overall.  As Jim Sciutto on CNN pointed out, what kind of math are these people doing in this regard?  There are already more than 31 million documented cases of COVID in America in a little more than a year, during the same time in which 564,000 people DIED from it...so far.  And another wave with a virulent strain has hit the country, focusing on the Midwest with hospitals in some localities filling up.  How many deaths will result, I wonder, from this "pause" where vaccine shortages will keep people from getting the protection they would have otherwise received?  Having witnessed something similar recently in Europe with their interruption of that region's predominant AstraZeneca vaccine in the midst of a serious upsurge in infections, it completely escapes me as to why the authorities would take such a step, other than just to cover themselves in the event of a future backlash of hindsight criticism.  They say it's to review the clotting cases and formulate an improved policy of administering the J & J vaccine only to those groups less susceptible to the clotting side effect, but really, how much time do they need to take to figure this out and why stop the process at all?  Problems and emergencies arise in life and there are snags...I get it...but the consequences of delay can be catastrophic: what if the folks at NASA had displayed the same attitude around this time 51 years ago during the Apollo 13 mission when an onboard explosion threatened the lives of its crew?  Well, "we just need to 'pause' it all and conduct a review" would have been rightly considered absurd under the circumstances back then! If you say that one woman's death is one too many (and I agree that any death is tragic), then I return again to the math: how does that make the deaths of many more less important if the vaccine is withheld? The FDA claims that there will be enough Pfizer and Moderna vaccines to fill the gap left by the absence of expected Johnson & Johnson vaccines, but to me it seems there is a logistical problem here, especially when you consider that J & J was strategically being used to reach places where the other two, with their more stringent refrigeration requirements, were less feasible and accessible.  Of course in Europe with AstraZeneca they had no backup vaccine brands to fall back on, making their earlier decision to hold up vaccinations even that much worse in effect on the suffering population.  All I've been hearing on the news is how we're in a dire race against time to to get to "herd immunity" before this pandemic can sprout variations against which the vaccines won't work.  But now suddenly...at least in this case...that doesn't seem to matter, go figure.  At last report Dr. Fauci says the pause will last days, not months...but it's still a real-time problem with the clock ticking and people's lives at stake, with the mathematics going against that decision to pause.  Do your review if you think it's necessary...but don't disrupt the vaccination efforts with big public fanfare while empowering the anti-vaxxers. When Johnson & Johnson is resumed and they get their production back in order, how many will pass on it because of this decision when they would have otherwise been vaccinated...