I just sent this to my nephew who is a current pro player, and he reckons this is absolutely spot on.
He thinks the whole story is massively overblown. He said it's obviously not great sportsmanship, but (and this is interesting) that lineups and tactics get leaked all the time through other means anyway, so someone watching training from behind a tree wouldn't get anything that would have any impact on the outcome of a game, and he can't see anything other than a fine in all likelihood.