oil gets everywhere when a turbo fails
depending on how your turbo has failed you may find the pressure from the exhaust or inlet has found its way into the oil lines of the turbo, upping the crankcase pressure, blowing oil into your intake and then blowing the line off your separator.
whatever has happened youll be needing to pull all your intake off and cleaning it, renewing oil and air filters, cleaning your MAF and boost pressure sensors, will be an ideal time to de-gunk your EGR (maybe a delete?) and have the IC and manifold off to make sure no bits of turbo have ended up in there, also a perfect time to get the swirl flaps blanked/locked/deleted (if you delete the EGR and/or swirl flaps you'll need a remap to avoid MIL and limp home mode).
**IT NEEDS TO BE SO CLEAN YOU CAN EAT YOUR DINNER OFF IT**
Cat and DPF are your next worries, there are companies who professionally clean them, after cleaning them you will need to get the DPF reset with either Multi ECU Scan or pay a dealer/specialist to do it. additional hydrocarbons (oil or excess fuel) in the Cat and DPF cause monolith damage and you'll end up replacing them if they're not already shot by not cleaning them now.
im sorry that you've had one fail
and i hate to be the bearer of bad news with regards to the amount of time and money its going to cost you. the only silver lining i can give you is be glad you didnt end up with a 'run away' (where the engine runs on the engine oil after a blown turbo) because then you'd be into a completely seized motor and not just a new spinney boost creator.