Hierophant heard the typing stop, suggesting one of two things, the generator had shut down, or WilyII is running some kind of diagnostics to get the rest of the station back up and running.
While he was aware that the Resistance is suffering mentally from what had just happened at St. Acidburg, he knew it would only be a matter of time before enough of their forces recover enough of their senses to launch an attack on the Wily Star II. And considering how long it normally takes for any form of diagnostics to find and fix the problems that are blacking out the entire building, he worries the Resistance will have already found and torched the Star before WilyII ever has a chance to check up on its progress.
Programmed with all types of White Magic, Hierophant could try casting Haste to speed up the diagnostics, though only
The Wheel of Fortune could properly control how fast the possessed item can be; he'd probably be lucky if he can speed up the diagnostic by a few minutes.
Still, he has to do something to get the entire station back up and running, otherwise he'll ruin the Plan B everyone has been talking over since the whole war began.
Keeping the staff pointed at the lights, he sneaks back down to where the generator is, pressing his stomach to the wall while poking one eye out to find everyone huddled around that evil-flowing crystal, and the generator console running its diagnostic, though he can't tell how far its' gotten with the amount of bodies blocking his view. He quickly pulls away and turns his back to the wall, pulling the staff down to the yellow orb on his hat while hovering two of his fingers near his forehead and concentrating on its blue orb until it flashed a red, sparking light.
Not wanting to waste anymore time, as the lights were beginning to dim from the lack of substitute energy, Hierophant whips around and points his staff at the console, firing off the red orb of light as it disperses into small sparks upon contact with the surface of the keyboard and crawls around it until they found and squeezed into every exposed crack on the console.
He can't tell if the diagnostics were speeding up or not, but he also can't stick around to find out as he turns the staff back towards the lights and reestablishes his concentration to keep them brightly lit while making his way back towards the top of the stairs to wait for the results.