One hardly expects OCSP sources to keep us informed of defections. But the priest in charge of the Savannah group is in palliative care for cancer and I see no evidence on the website that he has been replaced, which makes this at best a group without a pastor. As you mentioned, the group in Arlington, VA has "merged" with the group in DC. I am not sure that many people who worshipped at an Ordinariate Saturday Vigil Mass in suburban Virginia are making the trek into DC for a Sunday mass at 8:30 am. I think that we can see downsizing of some groups, reading between the lines. . . . Despite the fiasco of the situation at St Mary's, the rest of the ACA parishes that wished to join the OCSP seem to have been able to take advantage of the mechanism put in place to enable that to happen. I very much doubt that any of the remaining ones are still contemplating this step. Certainly the ACCC has been tapped out in this regard. ACC or TEC parishes? What are they waiting for? No doubt individual clergy could step forward, and then try to gather a group. Fr Sellers is still trying to get something off the ground in Cypress, TX. But the OCSP, at least, has done so little to make itself known or give evidence of being a viable operation that I can hardly think that anyone who wanted to "wait and see" has become convinced.I'm still not convinced of the need for, or possibility of, confidentiality if a group, with priest, from an existing parish wanted to come over. Consider that as soon as an Anglican parilsh priest or curate, either on his initiative or on the initiative of a friendly group of laity, said, "OK, let's keep this very quiet, but I'm thinking of giving the people in Houston a call", the bishop would learn about it in hours, if not minutes. I can't believe that there could be any reasonable expectation of confidentiality in such a case -- it would be above-board, with the blessing of the bishop (good luck, though it happened) or not at all.
But if it were a group-in-formation independent of an existing parish, there would be absolutely no benefit in keeping things confidential. You would want everyone possible to know about it. You'd have a website, a newsletter, and a Facebook page.
Not happening.