Article continues below advertisementElon Musk has had a sudden change of heart over son Romulus St. Clair, whom he shares with Ashley St. Clair.Though the tech mogul stayed silent when St. Clair first revealed she was the mother of his child, he now wants full custody of the tot due to her recent apology for making anti-transgender comments.Article continues below advertisementElon Musk Says He Wants Full CutsodySource: megaElon Musk said he's filing for sole custody of the son he shares with Ashley St.Clair.