By David Craven The problem with common sense is it’s not always common practice. Everybody was shaking their heads at that decision to send off Hull’s Nu Brown for an accidental head clash at Warrington last week. There just seemed to be no common sense applied to it whatsoever. But thankfully, this time, it has been used: Brown hasn’t got banned and, not only that, the RFL have quickly amended the rules which is great news. One of the big complaints about many sport’s ruling bodies is that they are out of touch, they don’t know what to do and don’t know how to react. But they’ve done the opp…