Thanks, I sent them.
Also, for others encountering the same situation, it is worth noting that we somehow "mitigated" the situation by increasing the number of replicas per shard from 1 to 3. That way when 2-3 nodes get dropped within a few seconds, we have less chances to get into the red zone since there's one shard left to keep us in the yellow state. That's not an exact science, but it helps a bit...