What counts against a hijacking attempt is that he apparently did not attempt to disable the pilot, but only to grab the controls. He could not realistically expect the pilot to meekly hand over. If he "switched off the engines" as claimed, it's either a suicide attempt or a bizarre, fantasy enactment. If the latter, it's unlikely that you would remember absolutely nothing. In those rare situations people usually snap out of it after a short while. Hollywood loves those scenarios.
However, at this stage, the reporting is rarely accurate anyway.