Brick by brick

As Fr. Zuhlsdorf put the matter in "The next step" (WDTPRS, August 22, 2009):

The Holy Father issued Summorum Pontificum.

Card. Castrillon of the PCED offered the SSPS a list of conditions.

The Holy Father lifted the excommunications.
The PCED has been placed under the CDF.

Now… with a biretta tip to Rorate:

Bishop Alfonso de Galarreta chairman of the SSPX commission

The Argentinian Catholic website Panorama Católico Internacional published this week the news that the current Rector of the Seminary of the Priestly Society of Saint Pius X (FSSPX / SSPX) in Argentina, Bishop Alfonso de Galarreta, has been named chairman of the SSPX side of the oint Vatican-SSPX commission in charge of the theological discussions.

Panorama adds that sources "close to the SSPX" inform that the Bishop will remain as rector in Argentina for the moment, but may change if his duties in Europe (that is, as part of the commission) deprive him from the time that is deemed necessary for the activities of the seminary.