In the scene reintroducing Alpha in Once A Ranger, Alpha implies he hadn't been in working order for a while. Who's been working on him to get him up and running? Adam, who had experience with Morphin' era tech, and Andrew Hartford. Who created an Artificial Human. Who better?
The Morphin' Grid is some sort of energy formed from the battle between good and evil, and the run-off energy tends to form in explosions. With multiple bad guys (and later in the team-up episodes, multiple good guys), the Grid must've been overloaded and gone crazy with the explosions.
