Perhaps the bigger question is why did the person leave with his big stack. If he did it by choice, then rat hole minutes punishes him by making him wait for a period of time before he can play again at that table. Not a bad thing to do, but it also punishes players who leave not by choice.
Rather than punish a player who was removed from the table unexpectedly (usually for sitting out too long), make sure he isn't removed at all. Do this by increasing the Sitout Minutes setting (default 10 minutes, way too short), and enabling Sitout Relaxed setting, which prevents a player from being removed unless a player is on the waiting list for the table.