Let's take a situation, A cop aiding a suspect(friend) came cuffed and arresting a player, at the same point of time the other player come and /rob. the player who getting cuffed and getting arrested becuase of Animation can't do anything or perform any actions which gives an unfair advantage to the other player.
My suggestion is to when a player tries to /rob any cuffed player, /rob should be unavailable., showing the message "Cannot Rob this player. He is being cuffed or arrested."