Everyone was rushing out of time. Mandala must rush Ajax to follow the deal so he would get to execute the shares soon meanwhile, at the same time, Ajax started to lose his urge to reveal the real Mandala Katto to the public.
The first time Ajax involved himself in Mandala's illegal scheme was to trap him. Ajax wanted to revenge on Mandala for his marriage with Sherly. He could not get coupe with the decision.
When you found out Mandala's business background, he wanted to prove to Sherly that she made a mistake by choosing him as a husband. Especially when he later found that if he has been created by the woman who was pregnant by his baby. She ran off of him and left Artemis with him.
