I did check the compressor side when I had things apart and it did not seem excessive. The oil smoke diminished over the next 15 miles or so, so I expected that I was still burning crap out of the exhaust. I went out on a run and put my foot in it and it ran away. I have had a number of fresh motor runaways on blowby, so I was carrying the hose clamp pliers to pull the elbow and choke it out if I got a blowby runaway, but I had just vacuumed out the inside and left them on the bench. This one is the first runaway I have had in an automatic.
Anyway it was like those YouTube videos. Tremendous amounts of smoke. Luckily as I sat in a driveway with it in drive, trying to decide how to proceed, the RPMs gradually dropped and it died. Walked back to the shop to the hose clamp pliers and drove it home after I pulled the hose. It was soaked with oil. At least I know how the motor got wasted in the first place. No wonder they dumped the car so cheap.
I suppose it could just be oil in the IC, but I am betting the turbo is wasted. I will start pulling it sometime tomorrow.
FWIF I wasn't sure the flapper vale would shut off enough air to kill a runaway, but upon inspection that would definitely do the job.