Before you go calling people Jackasses you should maybe have a think about it. One of the prime objectives of the rules is SIMPLICITY and so therefore some particular situations will not be modelled, this is one of them.
How do you know what the exact nature of the weapon is?
The weapon obviously attacks things at all levels so is more of a vertical plane than a beam because it isn't restricted in height it doesn't contour the ground and it isn't stopped by walls, hill, etc.
As you say however the rule is clear. It hits all things along the line. End of.
Eh...He is and he is hands down the worst writer for rules and fluff employed by GW.
Check out my DKOK Project Log!
Armies : Raven Lords Chapter, 219th Siege Regiment and Da Grotteef Waaaaghhhh
Currently Painting : 219th Siege Regiment, about 25% done! Last updated 3/7/2013