A good way of justifying the long brake run is the lack of need for an MCBR. If you really think about it it was either have an MCBR somewhere in the track eliminating an element or just have one long brake run that also functions as the MCBR. (I'm talking about train clearances, not brakes or trims)
Also for the people who think Behemoth will die now because of this, I don't think that will happen. I know of a LOT of people whom have yet to ride it because they're too scared and they're working their way up. There will still be a crowd that will ride it now that there is more of a gradient.