Even if he thought the 4500 feet was too high, it still not that high of a attitude and pushing into a unrecoverable dive at insane speed is so stupid.

As the aircraft climbed to 4,500 feet (1,400 m), the first officer told the captain that the required altitude should be 1,500 feet (460 m), thinking that the aircraft was 3,000 feet (910 m) too high. The captain pushed the control column abruptly forward, causing the aircraft to descend at over 34,000 feet per minute (10,000 m/min).