Yep. I tend toward this view. That Obama isn't an instrument of Satan, but like several tyrants of the Hebrew Bible, is being used deliberately and consciously by the omnipotent God on His disobedient people.
If this view is correct, then the obedient Christian will stand back, "build houses and dwell in them, plant gardens and eat their fruit" while Obama wrecks things. (Jer 29:5) In other words, get on with life and not interfere with or fret about Obama's wickedness. Speak the truth, but otherwise let God's plan work its way out.
The same sorta question applies to killing George Tiller or Hitler or slave traders. When does the Christian act directly against evil, and when does the Christian step back and let the hand of God take care of things?
Ephesians 6:12 For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places.
Tough question....I do not want to presume at anytime to act under the hand of God but I do believe his vengeance is his to bestow...how he does it may or may not be through us and may or may not be something we agree with as a whole.