Yes, but you can’t call both the opinion of the Rambam. The opinion of the Rambam is his second, edited opinion. He has already renounced his first opinion.
You’re still separating the person from the name. “The Rambam” is a mystical name to you- “the Rambam” can’t be wrong. but the human being R Moshe bar Maimon can change his mind and renounce his previous shittah.
The first opinion could easily be one of the shivim panim laTorah, but it’s not the opinion of the Rambam. The Rambam changed his opinion.
I think there’s something hashkafically wrong with saying that any human being can’t be wrong. Perfection is Hashem’s realm.