Did anyone know that during a battle in this level you can kill off the ICPs without an "Illegal Program Termination" sign coming up? They keep reentering so you can kill them for an unlimited amount of time.

I guess you're referring to Thorne's Perimeter Partition. I figure what you're talking about was done because the combat on that level is so hectic.

It would be easy to accidentally de-rezz an ICP while fighting the z-Lots. So it would be pretty frustrating if the level kept ending, every time you accidentally knocked off an ICP. That's probably why they made it so you can de-rezz ICPs without repercussions.