Last night, I mixed and worked some dough and put it in the fridge overnight.  I didn't account for enough rise, and it rose out of the bowl and out from under the plastic wrap covering it.  The edges of the dough which are exposed to the air are hard.  Can I just trim this part off and still have a successful bread experience, or is this dough ruined? 
I would recommend cutting off the really dried out part. To try and rehydrate it would be dificult, and the rest of the dough is the proper proportions... 