Did you have a look at the oil supply for the turbo? How bout the oil pressure sender? Leaking that much oil all of a sudden may be as simple as a hole in the turbo's oil supply line or the oil sender backing out of it's threads. It's seems that something external is spewing oil all over the passenger's side. There is not a ton of things that can spray that much oil in such a short period of time.
Heath
Heath