Hi Diana, I wouldn't want to be in your shoes right at that time. It's too bad they killed the skunk but that is the nature of dogs. We like to think of them as sweet cuddely babies and most of the time they are, but sometimes the predator shows up.
They were doing what comes natural. Daisy killed a bird and I couldn't believe it, I was horrified, but it was natural for her.
Good thing you had the stuff to clean them up and yourself on hand, wow I can't imagine having to do that job. I'll bet you are glad that's over.