So. After a long chat with RM Turbo's, he doesn't think there's anything wrong with the turbo. With the play in the shaft, he said thats normal, its supposed to, he called the bearing a name to which it draws oil through it for lubrication, which in lamens terms, takes up the bearing free play. Hence why the I can hear the turbo spin down for 30 seconds after I turn the motor off.
Also mentioned, the amount of oil I used, the turbo wouldn't go through that much, He said I would really know if it was, there be oil everywhere.
So. Not sure what to do here. Leave it and just drive it or look into it further.
Atleast I don't need to remove the turbo now. Which is one good thing. Good time to fix the little exhaust leak coming from the dump pipe now its off...