The bishop is not in good standing with the Church...you don't need a decree to see that.
I don't see any support for your statement. On the contrary:
Here is an excerpt from an article on Bishop de Roo:
“Not everyone recognizes the defining moment of his or her life, even if it is right in front of them. Tonight, we are grateful that Bishop Remi De Roo did recognize his defining moment when he was doubly summoned. He recognized the momentous import of Vatican II and spent his next 40 years as.a bishop responding to it.
Each one of us here can bear witness to how our faith has been transformed, challenged and made whole by the vision articulated at Vatican II. The opening words of Gaudium et Spes (1965) are as breathtaking now as then: "The joys and the hopes, the griefs and the anxieties of the (people) of this age, especially those who are poor or in any way afflicted, these, too, are the joys and hopes, the griefs and the anxieties of the followers of Christ."
Bishop De Roo, the youngest bishop at Vatican II, was taken beyond himself by this vast horizon of hope. He became one its most articulate and intelligent apostles and spent his years in Victoria trying to implement the vision of the church as outlined in the documents of Vatican II.
The people of the Diocese of Victoria know the dedication and sincerity he brought to this task….” http://goliath.ecnext.com/comsite5/bin/pdinventory.pl?pdlanding=1&referid=2750&item_id=0199-1179212