I certainly hope so. Them saying yes is the big evil of the season that they're trying so hard to avoid... and I love it when the inevitable evil thing happens anyways despite all the valiant efforts to stop it.

HOWEVER, what would really suck is if they both say yes and then the big showdown between Michael and Lucifer is just a fist fight between sam & dean in a motel, that ends with someone just getting knocked out so they can go back to hunting ghosts next season... what I mean to say is thatif they say yes, the writers and producers really need to do the ensuing battle justice by making it an all out throwdown with lots of special effects and kick ass cinematography. Anything less would be a let down of epic proportions.