I have seen a piece of video which is poor quality, probably taken from a mobile phone in the crowd. Maddison is seen curled in a ball as though eviscerated as the play, from which Argyle scored, passes him by. Bradley leans over him from 2 or 3 yards away in a position consistent with giving him a short mouthful of abuse. It isn't the sort of pecking motion you'd see with someone spitting. Bradley is behind Maddison so he can't have seen what happened himself. If that's all they've got it's inconclusive at the very most.