I managed to find a link to an old page where the video had been removed so I don't know what Ross was talking about. In one of his old books he illustrates it with dbs in the manner I have described previously.
The exercise Ross is doing in the Hardcore video has a different emphasis (it's what that guy doing snatches, swings etc. in the vid of YouTube I posted calls a Neider press). This is quite a popular power exercise with rugby players. A variation is have a partner push the loaded barbell towards you, you take the weight and explode up onto your toes as you press it back with maximum force. Until I started this thread I had never seen this type of movement described as Neiders.
With my variation you are supporting the weight completely across an almost horizontal plain, it puts a lot of stress on the shoulders. In this vid:
the guy brings the dbs to his side between reps, thereby releasing the tension. I tried Derek's complex at 20kg for 3 x 6 and it reminded me how much it makes your shoulders scream when you keep the bar at that height.
I guess a punching or putting type movement with bands or with a barbell angled from the ground might be a better exercise.