You're right, they are wrong based on every rule set I've seen. In fact, I've seen more interference when girls were trying to get out of the way than when they just stayed put.This argument came up at a umpire zoom meeting last night. Quite a few fellow blues says the batter has to make an attempt to get out of the way, I still stay if the batter does nothing out of ordinary, just recovering from a swing or standing there, there is no interference on a throw to third.