I decided to make a 2.5kg sourdough to make bread and pizza out of it. I used the following formula: 76% hydration, 2% salt, 20% of starter (100%).  I mixed the flour and water and let it autolyse for about 2 hours. After that, I purred in the starter and salt dissolved in water. I mixed by hand until the gluten was formed.  After that I left it to bulk ferment over night. I left it covered in the oven with the oven light on.  In the morning it grew a lot, I think it doubled. However when I took it out on the bench it seemed liquidy. It was very very hard to handle. I left it outside in the cold for about 30 min then I tried to shape it. It was still pretty liquidy, it lost structure.  Can I still bake with this dough? I put it in the fridge because I had to go to work.   Should I simply bake and see what happens?  Kind thanks!  Update:  So the pizzas were a disaster and the bread didn't spring too much but the taste was good.  
I don't know how it would work for a loaf of bread, but there's a good chance that it could be used to make flat breads.  If the dough is too difficult to work with, you can chill it down (and you said it's already in the fridge, so this is just for anyone else), and then sprinkle some flour across the top.  Reach in, grab a handful of dough, get it well coated in the flour, and then shape it.  Griddle on both sides, and you're good.  If you have a lot of dough to use up, I'll often griddle it over higher heat to get both sides set (and maybe a touch of char), then slide them into the oven to finish cooking through. 