When the midwife fell, Minato struggled to decide what he should do. He wasn't sure it would be safe for either Kushina or the baby if he tried to move his wife out of danger while she was still giving birth.
Less than two seconds after the midwife fell to the floor in a bloody heap, the decision was made for him when the mysterious masked ninja who had snuck in after presumably killing the guards had happened to look down.
"Oh my god! It's coming out of her thing!" the oddly familiar sounding ninja yelled a second before he fell into a dead faint.
Minato caught his student who would have a whole heck of a lot of explaining to do when he woke up an instant before he hit the ground.