There is one (or was it two ) bolts on the underside of the manifolds that are for support. I have got the turbo off without the manifolds before, it took 45 minutes to do it, but I got it off. Threre is also another bolt on the rear of the engine that holds the turbo oil line that must be removed.

Don't forget to give the intake a good cleaning while it is off to get all of the cr@p that the EGR deposited in there.