/Remake use to restart game when first blood occurred
/Remake should be unavailable once firstblood has occurred on the enemy team as well as all players being present in the game. The following game link leads to a game where our Blitzcrank killed enemy shyvana at her blue, so the enemy does a /remake so they don't lose, allowing their support to take the loss for them for free. http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/2230489829/209662401
This shouldn't happen since /remake is suppose to be disabled upon first blood occurring and since all 5 players were present.