I can't see any problem with it apart from it makes him look a tit.
Related to the incident yesterday the rules in MLS must be different because yesterday a GK was penalised for coming off his line to save a penalty in the sudden death part of a shoot out, given a yellow card which was his 2nd of the game so he was sent off. Centre half went in goal in his place for the retake, as no subs allowed after the game had 'ended', saved the penalty and his team scored the next one to win. Karma