Judging by the continuation of the game, it's possible to say that castling immediately is more accurate.
1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... g8f6  4. d2d3  4... f8c5  5. c2c3  5... d7d5  6. e4d5  6... d8d5  7. b5c4  7... d5d6  8. b2b4  8... c5b6  9. b1d2  9... c8g4 A new move. Jumabayev had used a lot of time already, so I doubt it was prepared beforehand.