InteInteresting read. Is the author saying that the irrevocability of the angels’ decision whether or not to serve is an open question?
Fr. Suárez's indirect quote via the Catholic Encyclopedia, and Fr. Fortea's explicit affirmation is that, during the testing period, angels could go back and forth in their decision to serve or not to serve God. Hence "the war in heaven". However, once the testing period ("the war") ended, the angels were locked into their decisions for, or against God. Changing their minds once impossible once the good angels were admitted to the Beatific Vision and the demons were abandoned to their choice.
-Theo
Re #51: Very good! Thanks.