Russians are f-cking crazy.
But Evgeny Prigozhin sealed his own fate when he sold out, with his forces approaching Moscow. He obviously had Putin by the short and curlies at that point, which is why Putin was desperate to make a FAKE deal.
As soon as the crisis was over, Prigozhin's life wasn't worth a ruble.
Yes, he was that stupid.
BTW, if he was going to sell out like that, he should have gotten himself into exile, far away from Russia, before ANYTHING else!