Ok, first of all, this has been debated many times. Let's get it this time. A corked 180 is essentially, physically not possible. There really isnt an arguement. Its physics. A little off axis yeah, but corked no. It simply does not work. You need that full 360 degrees to right yourself.
However, I said essentially. This is because if you went off a big enough jump, theoritically you could do the first 90 and get your head under your legs, and use air resistence to right yourself. However, the amount of air you would need for that would make Candide or Wilson look like little girls.
So no, the cork 180 is practically impossible.