I'm sure the mods are just like the CMs are just like us trainers - if someone causes a big enough problem, they are discussed as a problem child and get a shorter leash. And once you decide to shorten the leash, it takes a lot less provocation to give it a yank.
Many of these guys believe that notoriety is the same as respect. Unfortunately, many noobs give them respect because they have notoriety. It's a vicious circle which provides incentive for continuing the behavior.
Regards,
Hammer