It is very important that we consider the exact wording of the Apostolic Constitution carefully. After all, God has made us rational beings. But it is even more important that we Anglican Catholics face up to the fact that we are at a historical turning point.
For most of my lifetime, the Ecumenical Movement seemed (I put it like that because it is arguable that it was already flawed and leaky below the waterline) to be going places. However messy things might be, there seemed to be gradual convergence. ARCIC did say some remarkable things; and, at the ground level, there was indisputable liturgical convergence.
The plain fact is that things are now wholely different. The Anglican elite has set out, knowingly, on a path of divergence...
Read the rest of Fr. Hunwicke's analysis of the current state of ecumenical affairs and of Pope Benedict XVI's initiative on his blog Liturgical Notes.