Leif was still hadn't made the jump into the chasm. And at the rate the other Initiates were beating the chasmfiend, Leif probably wouldn't have to. However, instead of watching the intense battle below, Leif was watching the radiant, Kaladin. “It doesn't make sense,” he thought. “Why would Captain Stormblessed make us suspicious of each other one day, and then the next day force us into a situation that demands teamwork.”
After a few minutes of studying the man, Leif decided to unravel this mystery later. He didn't like the looks some of the Squires were giving him.
Leif approached the edge, looking down at the battle being raged below. Down at the people who would one day be radiants, assuming they weren't killed by the murderer with a shardblade. He frowned. The idea that people wanted to kill filled him with both confusion and disgust. You killed because of necessity. What sort of sick, twisted person felt the need to kill someone they just met. What had Lomot done to deserve death.
“Of course, this chasmfiend probably hasn't done anything to deserve death, yet there they are, killing it”
That was the reason Leif didn't join the fight. The majestic creature had done nothing to offend him. It didn't deserve to die. And Leif stood by. Watching the inevitable death.