The main reason for that to happen was because Zule was separating himself from the tower's formations. He had been fused with them for thousands of years, so it would obviously cause some strain when he started.
Back on the last floor, Zule's silver light pulsed ferociously. Krune and Iem could feel the power of the Space Laws emanating with each pulse. Finally, Zule began to move from the center of the formations. As he floated away, strands of Godly Energy kept breaking apart as if they were some kind of chains.
Finally, the last strand disappeared, and Zule left the formations. As soon as he did that, the pressure that emanated from him disappeared too. Everyone in the tower felt the moment it happened.
"So, you can control the pressure of your aura."
Zule nodded and then shook his head.