As to exactly 'why'?, [for all possible guessed-at reasons], he, and a number of others from the old ROCOR, did not physically flee the 2007 apostasy to the MP, is not clear at this point, except from what his long-time close co-worker, Jordanville Monastery resident, Fr. Laurence Campbell now also departed, [who also had worked for years, in tandem with Isaac on English liturgical translation work], -aided for years too, in their joint group translation efforts, by behind the scenes, Reader Daniel Olson's language expertise/advice, in both Russian and English and Church Slavonic and liturgical Greek, and also he being a Typikon expert in both the Russian and Greek Typikons, and in the Lives of the Saints and the Church Calendar, etc.- ... had told me in an informal impromptu & frank long phone conversation that I had with him at Jordanville, several years ago: in Fr. Charles' case, [though he gave me his semi-guarded but distinct impression that he was not in favor, in his heart, of the union] but....he could not physically, in his old age and declining ill-health, leave his only earthly home-his support base, Jordanville Monastery, as the monastery paid for all of his medical bills, fed and sheltered him, and as he told me, he was 'too old to go anywhere else'. With Isaac Lambertson too, he had lived and grown old, at the New York Synod headquarters for many long years, and he probably felt, in his declining old age, that he also, 'had no where else to go'. They will have his funeral there, it appears, served by ROCOR/MP Hilarion Kapral, who recently gave him the monastic tonsure, as Monk Joseph.