Photoshop :: Undo Smart Layer (object)?

I was messing around in CS6 and accidentally selected "conver to smart object" on one of the layers.  So now with layering multiple layers, I can't just select the areas once and use Gaussian blur. I would need to keep re-selecting all the areas for ALL the textures.  It's because the layers have become smart objects. 
 
How can I undo my layers being smart objects?  I want to just have the regular layers and only want to use the same selection (with the lasso tool) once to erase multiple layers of textures I don't want? 
 
Here is an image so you can see what I am talking about.  I don't want ANY smart layers on there.  I Just want to do gaussian blur on the layers themselves.