I was doing the plug/unplug thing to get catalyst to recognize/extend to more monitors than I had but for some reason if I disconnect the monitor, it starts behaving oddly
What does that mean?
If you have two of the same-model video cards, you shouldn't need to have anything plugged into the second card - the program should be able to access it via CrossFire. Unless CrossFire isn't working correctly.
Is CrossFire working correctly?
(Sorry, I'm on only one vidcard - I don't remember how to check this.)