One has to wonder if the Nobel prize was a mistake. Even if it was, no , a Nobel prize can't be revoked as per this[0]
[0]https://www.nobelprize.org/frequently-asked-questions/#:~:te....
[0]https://www.nobelprize.org/frequently-asked-questions/#:~:te....
https://www.nobelprize.org/prizes/medicine/1949/moniz/facts/
As an interesting factoid, lobotomy was practiced at all levels of society at the time. Even JFK's sister was secretly lobotomized [1]. It was covered up for years as it went about as well as one would expect a lobotomy to go.