driving around on your turbo like that probably wasnt the best idea. if you blocked it off properly and took the steps needed in order to drive on a blown turbo you would be ok. If the turbo was leaking bad enough, you can pump all your oil out thru the compressor and turbine housings. which then means its going thru your intake system back into your engine and getting spit thru your exhaust. probably not the greatest thing to do trying to boost on it either. best bet is to swap turbos out, and make sure you didnt damage anything else up.