I think cuts and scrapes heal faster when they're moist with neosporin than when they're scabbed over- something about letting the skin's repair cells do their job better. I usually dab some neosporin on top of the scab if one forms, and it softens up.
Glad you found your fourth! I had a similar (but less frightening) experience when my 8 chicks were about that old- they were out in a little pen in the lawn and i was holding the dog and trying to train her to relax around the chickens. Then my cat jumps over the fence (i had forgotten about her!) and stalks toward the pen. I can't let the dog go, so i drag the dog along as i yell at the cat, which scares the cat away but also sends 5 of the chicks flying out of the pen into the open yard! aaah! managed to get the cat in a head lock and shove both animals inside, then ran around collecting all of the scared chicks. oofda.