Rebuilding Turbo Problem

ok im in the middle of rebuilding my turbo and have removed the compressor housing from the backplate. i have also removed the bolts from the turbine housing, but this is were im stuck. there are 2 bolts on the turbine housing that when loosend back up into the oil return and the center section not allowing you to unscrew the bolts far enough to be removed from the back plate. so does enyone know how to remove these? or more easily is the turbine housing of the turbo clockable? i know the compressor side is but the turbine side i have not been able to move! if you can then all i need to do is clock it to where the oil passage is no longer behind the bolts. thanks alot!