Mindslave ideas.

[PeacekeeperPete]

Maybe if you failed the rng using the implant, the implanted person gets a weird psychological/genetic defect. For instance, it'd be hilarious if, instead of slaving them, they think they are a chicken and get a chicken accent (bok bok bok! Cockadoodle doo! etc.) That way itd be hilarious, cureable (in genetics, or maybe dissapears after a set amount of time) and also give the failed traitor time to make his getaway.