Subsidiarity is an excellent concept.
I WISH that the Church would make sure every Priest and Bishop knew what Subsidiarity MEANT!
It's our job to kick this out of line priests and tell them -- what the **** are you talking about social justice? This is what the Pope himself has said (and quote the article) -- you want to say the opposite? If not, then change your tune.
The Church is us, we are in obedience to Church teachings, not to some man. The bishops are shepherds who must follow Church teachings -- if they do stick to the doctrines and are obedient, we are to be humble and obedient too, but if they veer from Church teachings, its our job to wack them back in line. It's good for their souls too!