There are too many coward employees who resign before being promoted to management.
If you extract your waist you're pulling your body from the situation and trying to escape. What a coward.
Or, picture a little kid trying hiding behind their mom. Try to extract them from behind their mom's waist. They're holding on! They don't want to come out. What a coward of a child!
There are lots of different kinds of cowards.
This word uses the kun'yomi readings for both kanji, which you've learned already. Go you!