All the stuff I've been seeing is that the cops are actually becoming afraid of the otaku. Death threats from 2-channelers seem as common as a salaraiman puking his guts up on a Friday after payday, and given the Japanese history of "kill the foreigners", the large police presence (as douchebag said in the video...under police protection) seems to be more directed at preventing the threat of violence from 2-channel otaku from becoming a reality. Imagine several otaku 2-channelers go (more) psycho and stab or even kill a few gaijin who were "just having a party on Halloween". Doesn't look too good from a "Yokoso Japan" perspective.
Most Japanese probably look at the Train Jack as a mild inconvenience or as a curiosity. For anyone to get so bent out of shape about this means that person is either racist, can't get laid (because you fucking gaijin steal our women), or too old to remember that they were once young (someone who doesn't consider a fun night getting blotto at home in front of the computer).
That nothing and no one appeared to get damaged (except for alcohol induced neural damage) this year is good.