You and a lot of other people seem to be mixing up mechanics and ways of dealing with nechanics. The mechanic is the knight that spawns to try and take the bomb, killing said knight is only a method of dealing with the mechanic. That being said, how is the mechanic bypassed? The knights still spawn and will still try to steal the bombs. You can deal with it by either detonating the bombs before they can steal them or kill them before they can steal them. The first method can be done by either shortening the window between bombs appearing and knights spawning or distracting them.