I read it as Mikinosato apologising for his grandmother, mother and father, and has decided to severe all ties wit them. He also says he will do his best in Kyushu, so not retiring. Rough translation of his post on Nishiiwa's website:
This is Mikinosato. There is something I would like to tell everyone, so with my stablemaster's permission I will write it down. On X, two accounts, "It's Sunny Today" and "Melonpan," have been posting slanderous stuff against Nishiiwa stable for three months. In fact, I looked into it with a lawyer at the end of August and found out that "It's Sunny Today" is my maternal grandmother, and "Melonpan" is my mother. I have apologized to everyone in the stable, but I have not been able to apologize to all of you who support me, so I would like to take this opportunity to apologize as well. I am sorry for any discomfort caused. I feel a sense of responsibility every day, but the kind words I've received from the supporters' association and fellow wrestlers have been very encouraging. Thanks to them, I'm still able to keep working hard. I feel so happy when I finish my practice and training. I still can't write down everything I'm thinking, but from now on I'll focus on the Kyushu tournament. I'll continue to do my best at Nishiiwa stable. In July, I wanted to know the truth so I called my mother, who I thought was the most suspicious, but she denied it. No matter how many times I asked, she denied it, and I despaired at seeing my mother lie. After that, my mother and grandmother continued to slander on social media. I thought that the issue had been resolved and I had no intention of going public, but the other day I found out that my father was posting lies and speculation on social media as well, venting his frustrations about the guidance of the oyakata and the okamisan with fabricated stories, saying things like "I will never forgive those who destroyed my family" .I was shocked and unable to forgive him, so I decided to talk. After witnessing my parents' disgraceful behavior for three months, I decided I never wanted to see my family again , so I went to the ward office and cut all ties with them.
Nikkan article:
https://www.nikkansports.com/battle/sumo/news/202410240000927.html