Tap broke in exhaust manifold-3116 turbo removal question


I broke a tap and the piece fell in to the turbo : (


I have tried to retrieve the piece with a scope and a magnet. No luck. Do I need special tools to remove the turbo from the exhaust flange? The work area seems tight. If I take off the input or output of the turbo, are there gaskets to replace?


Thank you in advance!