Bishop Thomas "Locum Tenens" of Midwestern America

So Metropolitan Philip has formally removed Bishop Mark from his responsibilities as his auxiliary in the Midwestern region. There were two things notable about the memo he sent out. The first was Seyidna Philip's appointment of Bishop Thomas of Charleston as "locum tenens" of the Midwestern region. Since there is only one diocesan hierarch in the Antiochian Orthodox Archdiocese of North America there is absolutely no need for a locum tenens (fill-in diocesan hierarch) anywhere in the Archdiocese unless Metropolitan Philip himself dies, in which case his faux "Local Synod" will be overlooked completely by the Patriarchate of Antioch when it appoints the Archdiocese's locum tenens. Metropolitan Philip may like calling the regions/districts/whatever dioceses, but they are not distinct dioceses and as such have no need for a locum tenens when they don't have an auxiliary supervising them. The second was Metropolitan Philip's institution of the normative practice concerning the commemoration of auxiliary bishops in the Midwestern region (which is to not unless they are physically present). The Midwest is the only region that has been told to follow standard procedure - every other region/former diocese has been instructed to commemorate the metropolitan as well as the auxiliary bishop supervising their area.