Due to a series of bizarre convolutions I ended up buying two 360 controllers for my PC. Is there any way I can use them to play co-op Rage on my PC via split screen?

I seriuosly doubt it, i've looked around the menu and found nothing about split screen play, though the menu may dynamically change upon registeering two controllers and allow the option, but again, i seriously doubt it.

Bad luck dude... Check it out though with other people before giving up, hopefully i'm wrong.