I agree that it seems unlikely. I didn't click the article, but does it say who would be part of this super team? There's no huge FAs this year, unless you consider Horford and Howard possibly part of a big 3 (I don't). He could go to Boston and have at least an easier trip to the conference finals, but this OKC team is the best he can get right now.
This David Blatt news has gone by so quietly. Considering how much he was discussed when coaching and how big his firing was, I find it a little odd how few peoe are talking about him leaving the NBA.