I think the problem is that Voom is so technologicaly advanced, they've discovered time isn't necessarily linear. Maybe Voom is in some Back to the Future time universe they created by watching Stargate too many times. In the Voom universe, the past, present, and future are all the same thing. They can't undo it because Voom doesn't have Sci-Fi and so they can't figure out how MacGyver fixed the problems associated with this type of universe.