I am guessing you are (or maybe know the one in charge, in which case, could you forward this to that person) in charge of the seasonal metas. [message limit prevents more detail, clamp did not end right when cloyster was KO'd, so I thought it is a bug.
turn 13 is when clamp "ended" http://play.pokemonshowdown.com/battle-seasonalspacetimefuntimes-205933809
turn 13 is when clamp "ended" http://play.pokemonshowdown.com/battle-seasonalspacetimefuntimes-205933809