Hiromu defeating Enter's MegaZord causes an explosion which destroys Messiah's brain, allowing the other Go-Busters to finish off his physical form.
Devon defeating Blaze's Megazord causes a chain reaction that causes the Morph-X Tower to explode, which destroys Evox's body before he can teleport out of the Cyber Dimension.
While Hyper Space was destabilizing, nothing required the Go-Busters to leave it as fast as possible.
The Beast Morpher Rangers needed to race back to the cybergate immediately before they were swallowed up by the Morph-X explosion.
The episode ended with no indication that Messiah would return.
The final scene of the episode hints that Evox was still alive.
It's eventually revealed that Messiah's programming still exists in the form of cards.
It's eventually revealed the Evox lives on by possessing Mayor Daniels.
This is the only appearance of Messiah Cell.
Evox's robotic form would go on to be his main appearance.