Although they were at a disadvantage with the first confrontation, John did not feel like letting it go that easily.
Contrary to what Kevin has done, Desther's action toward them seemed overly excessive. His attacks clearly have the intent to kill due to the force he used on it.
At least, that was what he thought.
If he knew that Desther did not even use his full strength and capabilities, John would surely not think the same.
By pressuring Desther and Lexie regarding school rules, he wanted them to still abide by their objective, not allowing anyone to pass.
Desther, though, did not feel any kind of pressure at all.
He was already prepared for any scenario to happen anyway. Taking action without considering the consequences was just not his style.
In fact, he did not even bother responding. Contrary to what John was thinking, he actually does not plan to escalate the situation any further.
A tooth for a tooth, and a nail for a nail.
