I think there's something in the LBW rules about intent, not to mention the whole concept of "where would've the ball gone has it not been etc. etc." I personally dislike the whole fixation over minutiae in Cricket today. The Laws should, I think, be updated for the new technology, for instance the front-foot no-ball which now is preposterous when they keep trying to see whether a millimetre of the foot crossed the line or not, or the run-out with whether the bat was firmly touching the ground on the other side of the crease or not. Those laws were fine when the umpiring wasn't technology assisted, but they are turning the whole game to a circus these days.