The video of 118's human player seems to be throwing the tube between the line of the known Legal and ?? areas. What the rules say should be taken as written unless otherwise noted in a "spirit of the rule" clarifacation. Therefore while I'd rather side with the throw being legal, seeing as it takes the tube must use more space beyond the complete vertical "above the player station wall", the throws seen would be illegal at least in my eyes. I see this rule getting a week 1 clarifacation.
However, this being a thread about throwing tubes, the worst way to throw a tube is to "push it" forward. They need to be thrown, almost with a whipping action.
Also, the thought of tubes crashing into each other mid-flight from two opposite sides of the field sounds awesome.