I know that we tend only to ever hear the really bad side of families, wills, probates and family fall outs but there is another side. Where people actively work together to make things easier all round.
In this case, the father's Will will stand - on his death - as his last Will and Testament, unless he changes it himself now. His executor of choice , at the time he made the Will, remains the executor unless the father changes it ( and he can only make a new Will if he is compos mentis) or unless, after the father's death, the executor decides to resign if asked by the family.
The family cannot force the executor to resign - I know if I was the nominated executor and, unless I felt that there was skullduggery going on, the family wanted me to resign I would. I know others who, out of badness and bloody mindedness, ( of which Irish people seem to have a disproportionate tendency towards) would say - I intend to carry out Ted's wishes.
Just a little reminder to you all out there - keep your will current - I reckon every five years or so or if there is a major life changing event.
mf