Snake Eyes is set in an isolated environment, which acts as a micro-version of the world we live in. There we see people relentlessly chasing after their dreams, even if it means stomping over their brothers and sisters.
The magic trick with the hands, drawing and hiding the disk, is a display of supreme confidence in the hero’s own abilities. Which is just about all that he has left.
The famous “Steam Control” scene exposes it all.
Bloody arms shown on TV (video transmitter) are used for proof about a dramatic event. Like the manipulated news on mass media.