Apparently baseball umpires are treated a bit differently in the far east.
evident here and
more videos here
I hear that the coach from the OP has a history of getting physical with umpires including punching at least one (3rd hand knowledge). If true, and given this "different" game, how can anyone blame BK from preventing a second assault (he didn't choke him, he only held him off by the neck). You can't judge this incident with USA baseball expectations...I'd buy him a beer.