Have you already given Jose a call and asked him what it might be? He knows the history of the engine and it was taken care of by me with a lot of his recommendations. His shop moved closer to your area, so if he can't help over the phone, maybe he can go over to check it out.
It wasn't getting oil in the intake when I had it, the PCV system is stock, and the oil cooler lines were replaced. From the sounds of it, a gasket blew or oil line? I doubt the engine is done, The compression was 180 across the board, but make sure to have your mechanic do a compression test just to confirm. Hopefully, at the worst, the turbo is done. Was is whining at all?
Try degreasing the bottom side as Tire Shredder said, it helped me find the oil leak that was in the 7MGE.