I'd be more worried about where the chunks of metal ended up, myself. There's no question about how to proceed here... turbo must be rebuilt or replaced; intake piping, manifold and throttle body all need to be THOROUGHLY cleaned out; the intercooler needs to be professionally flushed; you need to do a compressions test to make sure none of the debris entered the engine and chewed up the cylinder walls... a leak-down test would be even better.
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