Sometimes it just technically impossible to resist. Some of the builds gains their full power too late. At 45 level, for example. But. You're right in general. Because we have the whole stable to resist. And yes, You're right again, it's like a mini-quest which must be resolved by the manager.
I could suggest to create a forum thread like "I was spammed by ... ". And post there the names of gladiators. Everyone taking a spam will be revenged then, sure.
But, this way doesn't resolve the main question : How i can defend myself by myself. And it's bad.