While Shaara portrays Lee as obsessed with only the option of staying to fight, Lee gives consideration to all possibilities here. This flexibility seems to contradict, at least somewhat, Shaara's portrayal of the man. He decides to stay and fight not out of narrow-mindedness, but because he has no guarantee of better ground elsewhere and because the effect on the men's morale to leave the enemy in control of the field would be bad. He realizes that their morale, pride, and emotions are their most potent weapons, and he cannot afford to damage that.
Stuart is like the adolescent who needs a stern father once in a while. He is angry at the questioning of his honor and wants revenge. Lee has the bigger picture in mind and basically tells Stuart to take it like a man and learn. At the same time, Lee knows Stuart will now be reckless to redeem himself. While he notes this is something to beware of, this recklessness is exactly the response Lee wants from Stuart. A crazed and furious Stuart will wreak havoc on the enemy tomorrow in his attempt to redeem himself in Lee's eyes.
