I can understand it if no handball is given when the ball diverts wildly off a thigh or something before hitting the hand/arm in a natural position. But are we really to understand that the rule now is it's ok if a net-bound shot tickles a follicle on the way to hitting an outstretched arm that is moving towards the ball? If so then the game is up.
Easy goal for Villa. Move into space, receive the ball, cross it quickly and hey presto.
Saints need to find a cutting edge in attack quickly. The slow build up isn't working.